d rest chem eng

7/23/2019 d rest chem eng

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1. In flue gas analysis by Orsats apparatus, carbon

monoxide is absorbed by

(a) cuprous chloride (b)potassium hydroxide

(c) alkaline pyrogallol soln (d) none of these

2. alorific !alue as determined by bombcalorimeter is

(a) higher calorific value at constant volume

(b) gross calorific !alue at constant pressure

(c) lo"er calorific !alue at constant pressure(d) net calorific !alue at constant !olume

#. Incomplete combustion of a fuel is characteri$ed

by(a) smoke formation

(b) high gas temperature

(c) high percentage of oxygen in flue gas

(d) high carbon monoxide content in flue gas

%. &or maximum discharge through a chimney, its

height should be(a) 2'' meters

(b) infinitely long(c) more than 1'. meters

(d) equal to the height of the hot gas column

producing draught

. Oxygen percentage (by "eight) in atmospheric

air is(a) 1* (b) 21

(c) 23 (d) 2*

+. tack (chimney) height in a big thermal po"erplant is dictated by

(a) pollution control aspect

(b) draught to be created(c) limitation of constructional facilities

(d) none of these

. - particular coal is said to be free burning "hen

it(a) burns completely (b) gi!es smokeless

burning

(c) shows little or no fusing action (d) none. -s time passes, the calorific !alue of stored coal

(a) decreases (b) increases

(c) remains unaltered

(d) may increase or decrease (depends on themethod of storage)

*. /mission of dense "hite smoke out of chimney

of a thermal po"er plant is an indication of theuse of

(a) less air for combustion

(b) correct amount of air for combustion

(c) too much air for combustion

(d) pul!eri$ed coal in boilers

1'. 0se of pul!eri$ed coal in boiler furnacepro!ides

(a) high calorific !alue (b) better combustion

(c) smokeless burning (d) pul!eri$ed coal11. hich of the follo"ing fuels is best for burning

on chain grate smoker

(a) non caking coal (b) caking coal(c) coking coal (d) pul!eri$ed coal

12. hich of the follo"ing accounts for maximum

energy loss in a boiler

(a) flue gases (b) ash content in the fuel(c) incomp combustion(d) unburnt in flue gas

1#. 3O!er4fire burning5 in a furnace is a

phenomenon characteri$ed by(a) supply of excess fuel

(b) supply of excess air

(c) burning carbon monoxide and other

incombustible in upper zone of furnace by

supplying more air

(d) none of these1%. hen steam is passed o!er coal resulting in the

endothermic reaction ( 6 72O 44444 O 6 72)it is called

(a) carboni$ation of coal (b) oxidation of coal(c) coalification (d) gasification of coal

1. &ischer48ropsch method aims at

(a) gasification of coal

(b) synthesis of gasoline (from water gas)

(c) hydrogenation of coal to produce gasoline

(d) none of these1+. ommercial production of petrol from coal (as

practiced in a factory at asol in outh -frica) is

done by(a) hydrogenation of coal

(b) gasification of coal

(c) carboni$ation of coal

(d) none of these1. In case pul!eri$ed coal from steam boiler, the

secondary air ser!es the main purpose of

(a) transportation of coal(b) drying of coal

(c) combustion of coal by supplying in

around the burner

(d) pre4heating the primary air1. 8he main function of primary air in pul!eri$ed

coal fired burner is to

(a) burn O to O2 (b) dry transport of the

coal

(c) ha!e proper combustion by supplying i

around the burner(d) pre4heat the tertiary air used for complete

combustion of O to O2

1*. 8he ad!antage of firing pul!eri$ed coal in thefurnace lies in the fact that if


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(a) permits the use of high ash content of coal

(b) permits the use of lo" fusion point ash coal

(c) accelerates the burning rate and

economizes on fuel combustion

(d) all of the abo!e2'. Orsat apparatus is meant for

(a) gra!imetric analysis of flue gas

(b) finding out combustion efficiency

(c) direct determination of nitrogen in flue gasby absorbing it in ammoniacal cuprous

chloride

(d) none of these

21. 9ick out the "rong statement

(a) 8heoretical flame temperature is

temperature attained by the products ofcombustion "hen the fuel is burned "ithout

loss or gain of heat

(b) :urning the fuel "ith theoretically re;uiredamount of pure oxygen results in attainment

of maximum adiabatic flame temperature(c) Burning the fuel with excess pure oxygen

results in maximum theoretical flame

temperature

(d) -diabatic flame temperatures of actual

combustions are al"ays less than maximum!alues

22. 8he maximum adiabatic flame temperature in

air compared to that in pure oxygen is

(a) much lower (b)much higher

(c) same

(d) either lo"er or higher, depends on the typeof fuel

2#. -diabatic flame temperature of a fuel is

dependant on the initial temperature of

(a) the fuel (b) the air

(c) both fuel the air (d) neither fuel nor the

air

2%. 9reheating of(a) the gaseous fuel before combustion

decreases the flame temperature

(b) ombustion air decreases the flame

temperature(c) either the fuel or the air or both increases

the flame temperature

(d) either the fuel or the air does not affect theflame temperature

2. 8he fuel ratio of a coal is

(a) the ratio of its percentage of fixed carbon tothat of !olatile matter

(b) helpful in estimation of its rank

(c) both (a) and (b)(d) neither (a) nor (b)

2+. - fuel containing carbon and carbon monoxide

(but containing the hydrogen or its compounds)

is burnt in pure oxygen at constant pressure. Its

gross calorific !alue as compared to the ne

calorific !alue "ill be

(a) more (b) less

(c) same (d) data insufficient< cant be predicted

2. =emo!al of hydrogen from coke o!en gas(a) increases its calorific value

(b) decreases its calorific !alue

(c) does not alter its calorific !alue(d) is not possible on commercial scale

2. ith increase in calorific !alue of fuels, their

adiabatic flame temperatures(a) increase

(b) decrease

(c) remain unchanged

(d) may increase or decrease! depends on the

quantity of products of combustion2*. >rindability index of a coal is 1''. It implies

that the(a) coal can be pul!eri$ed "ith great difficulty

(b) coal cant be pul!eri$ed

(c) coal can easily be pulverized

(d) po"er consumption in grinding the coal "il

be !ery high

#'. If the specific heat of gaseous products ofcombustion of a fuel is high, the adiabatic flame

temperature "ill be

(a) low (b) high(c) !ery high if fuel is of lo" calorific !alue

(d) none of these

#1. alorific !alue (kcal?kg) of dry "ood may be

around

(a) " (b) '

(c) '' (d) '''

#2. - coal containing high amount of !olatile matter"ill ha!e

(a) low ignition temperature

(b) !ery little content

(c) high fusion point of its ash(d) lo" adiabatic flame temperature

##. team is intermittently admitted in to the fue

bed during the production of producer gas to(a) con!ert O to O2

(b) increase in combustion rate

(c) increase the gas production rate

(d) minimize the chances of clinker formation

#%.hich of the follo"ing is called 3blue gas5

(a) coke o!en gas


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(b) water gas

(c) natural gas

(d) producer gas (produced using @opper

8ot$ek gasifier).

#. Auring combustion of gaseous fuel deficiency

of air

(a) lengthens the flame

(b) tends to shorten the flame

(c) does not affect the flame length

(d) increases the flame temperature

#+. 0se of excess of combustion air in the

combustion of fuels results in

(a) heat losses

(b) long flame

(c) condensation of "ater !apor from the flue

gas

(d) none of these

#. - gaseous fuel in order to de!elop luminosity on

burning, must contain

(a) carbon monoxide (b) hydrocarbons

(c) hydrogen (d) oxygen

#. 9reheating of gaseous fuel results in increased

(a) flame length (b) flame temperature

(c) ;uantum of flue gas (d) ignition temperature

#*. Buantity of coke o!en gas produced by hightemperature carboni$ation of one ton of dry coal

may be around

(a) #' Cm# (b) 3## $m3

(c) #''' Cm# (d) #',''' Cm#

%'. oke o!en gas is a better fuel than blast furnace

gas because of its higher

(a) calorific !alue, cleanliness and relati!ely

lo" distribution cost (due to its lo" specific

gra!ity)(b) adiabatic flame temperature

(c) heat release rate (thus re;uiring smaller

combustion chamber)

(d) all of the above

%1. hich of the follo"ing constituents of fuel does

not contribute to its calorific !alue on

combustion

(a) hydrogen (b) sulfur

(c) carbon (d) none of these

%2. ombustion of pul!eri$ed coal as compared to

that of lump coal

(a) de!elops a non4luminous flame

(b) de!elops a lo" temperature flame

(c) can be done with less excess air

(d) pro!ides a lo"er rate of heat release

%#. hich of the follo"ing is the most important

deterrents to an extended use of pul!eri$ed coal

in boiler firing

(a) ash disposal problem

(b) excessi!e fly4ash discharge from the stack

(c) high po"er consumption in its transportation

(d) erosion of induced draft fan blades

%%. 9ul!eri$ed coal used in boiler firing need ha!e

(a) less moisture content

(b) high fusion point of its ash

(c) high bulk density

(d) lo"er ash constant

%. Ary air re;uired to burn one lb of carbon

completely may be around

(a) %%&" lb (b) 2.+ lb

(c) 1+ lb (d) none of these

%+. Ary air re;uirement for burning 1 ft#of O to

O2may be around

(a) 2&' ft3 (b) 1. ft#

(c) '. ft# (d) 11.% ft#

%. ashing of coal

(a) reduces its sulfur and ash content

(b) controls its ash fusibility and increases its

calorific !alue

(c) impro!es its coking properties

(d) all (a) (b) and (c)

%. hich of the follo"ing has the highest gross

calorific !alue(a) blast furnace gas (b) coke o!en gas

(c) carburetted "ater gas (d) oil refinery gas

%*. Dost of coking coals are

(a) anthracite coal (b) bituminous coal

(c) lignite (d) none of these

'. 7igh excess air in combustion of fuels results in

(a) increased fuel consumption

(b) incomplete combustion


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(c) smoky flame (d) none of these

1. -tomi$ing steam to fuel oil ratio in a burner

should be around

(a) #&" (b) 2

(c) # (d)

2. &or e!ery 1'E increase in the excess air< the

fuel consumption increases by

(a) #&% (b) 2E

(c) E (d) 1'E

#. -sh content in the coke produced from a coking

coal ha!ing 2'E ash may be around

(a) E (b) 2E

(c)1E (d) 2"

%. Out of the follo"ing fuels, the difference

bet"een the net and gross calorific !alue is

maximum in case of

(a) pitch (b) fuel oil

(c) blast furnace gas (d) bituminous gas

. pontaneous combustion of coal on storage

results due to

(a) inade;uate !entilation

(b) lo" temperature oxidation

(c) storage in large heaps "ith small surface to

!olume ratio


+. Fo" temperature oxidation of coal resultingfrom bad storage conditions does not decrease

its

(a) caking po"er (b) calorific !alue

(c) hydrogen content (d) oxygen content

. /fficient burning of anthracite coal re;uires

(a) lo" preheat of air (b) fine grinding

(c) high excess air (d) all (a), (b) and (c)

. =ate of temperature oxidation of coal due to bad

storage conditions(a) decrease "ith increase in surface area

(b) does not !ary "ith increase in surface area

(c) is more for lo" !olatile coal compared to

high !olatile coal

(d) is accelerated by storage in large heaps

with small surface to volume ratio

*. &usion of point coal ash increases in its

(a) iron sulfate content (b) iron silicate content

(c) lime and magnesia content (d) all (a) (b) (c)

+'. hich of the follo"ing accentuates clinkering

trouble on furnace grate burning coal

(a) lo" density of carboni$ed residue containing

high proportions of iron and sulfur

(b) lo" forced draught and fuel bed temperature

(c) thick fire and preheated primary air


+1. - coal ha!ing high ratio of !olatile matter to

fixed carbon as compared to a coal ha!ing lo"

ratio of !olatile matter to fixed carbon

(a) is less liable to spontaneous combustion on

storage

(b) is more difficult to ignite and produces a

shorter flame

(c) re;uires smaller combustion space and less

secondary air

(d) none of these

+2. hich of the follo"ing can be made into

bri;uettes "ithout the use of a binder

(a) lignite (b) bituminous coal

(c) anthracite coal (d) none of these

+#. 9resence of free moisture in coal is most

disad!antageous during

(a) its pulverization (as it requires more

power)(b) combustion of fine slacks on the grates

(c) handling (e.g. "hen emptying "agons)

(d) none of these

+%. hich of the follo"ing is not a binder for coal

bri;uetting

(a) coal tar (b) bitumen

(c) molasses (d) none of these

+. 7ighly caking coals

(a) produce "eak coke(b) produce strong coke

(c) may damage the coke o!en "alls during

carboni$ation

(d) both (b) and (c)

++. 9resence of free moisture in coal during its high

temperature carboni$ation

(a) reduces the coking time


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(b) protects the volatile products from

pyrolysis (cracking) in the presence of hot

coke and hot oven walls

(c) increases the loss of fine coal dust from the

o!ens "hen charging

(d) none of these

+. 7igher percentage of ash in coal meant for the

production of metallurgical grade coke

(a) increases the hardness of coke

(b) increases the abrasion resistance of coke

(c) causes brittleness in steel

(d) none of these

+. Increases in ash content of blast furnace coke

(a) reduces its consumption in the furnace

(b) increases its consumption in the furnace

(c) does not affect its consumption in the

furnace

(d) decreases its hardness and abrasion

resistance

+*. 7igh sulfur content in a fuel

(a) increases the de" point of the flue gases

(b) decreases the de" point of the flue gases

(c) reduces combustion efficiency by limiting

the permissible temperature reduction of the

flue gases

(d) both (a) and (c)'. ith the increase in carboni$ation temperature

(a) gas yield increases (b) tar yield increases

(c) hydrogen percentage in the coke o!en gas

decreases

(d) methane percentage in the coke o!en gas

increases

1. &ill up the blank

ith increase in time of carboni$ation at a

particular temperature (say 1''' ), theGGG. percentage in coke o!en gas increases

(a) hydrogen (b) methane

(c) unsaturates (d) all (a), (b) and (c)

2. 9roducer gas containing least amount of tar is

produced by

(a) partial combustion of coal

(b) partial combustion of large size (*"#mm)

(c) high pressure gasification of coal (e.g. in

Furgi gasifier)

(d) atmospheric pressure gasification of coa

(e.g., in @opper48ot$ek gasifier)

#. 7igh temperature in gasification of coal fa!ors

(a) high production of O2

(b) lo" production of O2

(c) high production of O

(d) both (b) and (c)

%. Furgi gasifier (high pressure gasifier) as

compared to @opper48ot$ek gasifier

(atmospheric pressure gasifier) produces

(a) higher amount of methane

(b) lo"er amount of hydrogen

(c) both (a) and (b)

(d) higher amount of both methane and

hydrogen

. hich of the follo"ing constituents of coal is

most important in the production of coke

(a) moisture (b) ash

(c) !olatiles (d) carbon

+. hich of the follo"ing is most reacti!e (as

regards the formation of O 6 72from 6

72O)

(a) blast furnace coke (b) low temp coke

(c) anthracite coal (d) sub4bituminous coal. - coal that softens and fuses on heating in

(a) classified (b) carboni$ed

(c) caking (d) non4caking

. 9urity of coke means that it is high in carbon

and lo" in

(a) volatiles (b) ash

(c) iron (d) moisture

*. alorific !alue (kcal?Cm#) of coke o!en furnace

gas is around(a) *'' (b) '"##

(c) '' (d) 2'''

'. alorific !alue (kcal?Cm3) of blast furnace gas

is around

(a) +## (b) 1''

(c) %'' (d) +''

1. :last furnace gas is a !ery poisonous gas

because of its predominantly high


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(a) 72 content (b) O2content

(c) ,- content (d) 7%content

2. 9ercentage of carbon monoxide in blast furnace

gas may be around

(a) '. (b)

(c) 2# (d)

#. 9ercentage of hydrogen in coke o!en gas may

be around

(a) 1 (b)

(c) 2' (d) "#

%. 9ercentage of methane in coke o!en gas may be

around

(a) 1 (b) 1'

(c) 2" (d)

. oke o!en gas compared to blast furnace gas is

(a) more explosi!e and inflammable

(b) (b) less poisonous

(c) lighter (d) all (a) (b) and (c)

+. hich of the follo"ing gases "ill re;uire

maximum amount of air for combustion of 1 Cm#

gas

(a) blast furnace gas (b) natural gas

(c) producer gas (d) "ater gas

. hich of the follo"ing "ill generate maximum

!olume of product of complete combustion(Cm#?Cm#of fuel)

(a) carburetted "ater gas (b) blast furnace gas

(c) natural gas (d) producers gas

. hich is the hea!iest fuel gas out of the

follo"ing

(a) blast furnace gas (b) coke o!en gas

(c) "ater gas (d) carburetted "ater gas

*. H&uel can be defined as a substance "hich

produces heat by

(a) combustion (b) nuclear fission

(c) nuclear fusion (d) all (a) (b) and (c)

*'. atalyst used in &isher48ropsch process is

(a) $ickel (b) inc oxide

(c) -lumina (d) 8horium oxide

*1. In the flue gas analysis by Orsats apparatus,

oxygen is absorbed by

(a) potassium hydroxide (b) cuprous chloride

(c) alkaline pyrogallol solution (d) none

*2. In flue gas analysis by Orsats apparatus, carbon

dioxide is absorbed by

(a) potassium hydroxide

(b) dilute potassium carbonate

(c) cuprous chloride

(d) alkaline pyrogallol solution

*#. 8he se;uence of absorption in flue gas analysis

by Orsats apparatus is respecti!ely

(a) ,-2 -2 ,- (b) O, O2, O2

(c) O2, O, O2 (d) O2, O2, O

*%. hich of the follo"ing has the highest calorific

!alue

(a) lignite (b) sub4bituminous coal

(c) anthracite (d) peat

*. 8he main product of high temperature

carboni$ation is

(a) coke (b) ammonia

(c) tar (d) coke o!en gas

*+. 7igh temperature carboni$ation produces

(a) inferior coke compared to lo" temperature

carboni$ation

(b) less of gases compared to li;uid products

(c) large ;uantity of tar compared to lo"

temperature carboni$ation(d) none of these

*. 7igh temperature carboni$ation takes place at

(a) 2''' (b) +''

(c) %%## , (d) 1+''

*. Fo" temperature carboni$ation takes place at

(a) #'' (b) 11''

(c) "##./"# , (d) 1'

**. 9roximate analysis of determines

(a) moisture, ash, sulfur, !olatile matter

(b) moisture volatile matter ash fixed

carbon

(c) moisture, sulfur, nitrogen, fixed carbon

(d) none of these

1''. 0ltimate analysis of coal determines

(a) carbon hydrogen nitrogen sulfur

(b) carbon, ash, sulfur, nitrogen

(c) carbon, sulfur, !olatile matter, ash


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(d) carbon, !olatile matter, ash, moisture

1. Catalysts used in the manufacture ofsulfuric acid by chamber and contactprocesses are

respectively (a) V2O5and Cr2O3

(b) Oxides of nitroen and Cr2O3 (c) V2O5on a porous carrier and oxides ofnitroen (d) oxides of nitrogen and V2O5on aporous carrier2. !n contact process" #O3 is absorbed in$%& '2#Oand not in ater because (a) #O3as is sparinly soluble in ater (b) water forms an acid mist which isdicult to absorb (c) the purity of acid is a*ected (d) scale formation in absorber is to be

avoided3. Contact process (a) yields acid of higherconcentration than chamber process (b) yields acids of loer concentrationthan chamber process

(c) is obsolete (d) eliminates absorber. 2+& Oleum means that in 1++ lb." thereare 2+ lb. of (a) SO3and ! lb of "2SO# (b) '2#O and ,+ lb #O3

(c) #O3for each 1++ lb of '2#O(d) '2#O and ,+ lb #O3

5. -roducer as consists mainly of (a) $O% $O2% &2% "2

(b) CO" '2(c) '2" C'(d) C2'2" CO2" '2

. Oxyen is produced by fraction of airusin

(a) /inde0s process(b) Claude0s process

(c) both 'indes and $laudes process(d) ayer0s process

%. a materials for 0#olvay -rocess0 formanufacture of the soda ash are

(a) salt% limestone %ammonia andcoe o*en gas

(b) ammonia" salt and limestone(c) ammonia" limestone and coe

(d) ammonia and coe oven as

,. 4conomics of 0#olvay -rocess dependsupon the e6ciency of

(a) carbonatin toer(b) ammonia recovery(c) ammonia reco*ery and si+e of

plant(d) ammoniation of salt solution

$. 7ercury cells for caustic sodamanufacture compared to diaphram cells

(a) re8uire loer initial investment

(b) re8uire more poer(c) produce loer concentration of 9aO'

(d)none of these1+. Cement mainly contains

(a)$aO% SiO2% ,l2O3b (b) 7O" #iO2" :2O (c) ;l2O3" 7O" carbonates

(b)sulfates and chlorides(c) carbonate(d) chlorides

1. ?idely used method for conditionin ofboiler feed ater is

(a) cold lime process(b) coaulation(c)hot-lime soda process(d) se8uestration

15. 'ydra@ine is larely used(a) as a startin material for 0hypo0(b) in photoraphic industry(c)as rocet fuel

(d) in printin industry1. Arinitro>toluene is

(a) used in lycerin manufacture

(b)an explosi*e(c) used in dye manufacture


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(d) used in paint manufacture1%. Oil is

(a) a mixture of lycerides

(b)a mixture of glycerides of fattyacids

(c) solid at normal temperature

(d) ester of alcohols other than lycerin1,. ?ax is (a) a mixture of lycerides (b) a mixture of esters of polyhydricalcohols except glycerin

(c) li8uid at room temperature(d) a mixture of lycerides of fatty acids

1$. Bnsaturated oils compared to saturatedoils have (a) lower melting point and higherreacti*ity to oxygen (b) hiher meltin point and hiher

reactivity to oxyen (c) loer meltin point and loerreactivity to oxyen (d) hiher meltin point and loerreactivity to oxyen2+. ancidity of oil can be reduced by

(a) decoloration(b) hydrogenation(c) oxidation(d) purication

21. #olvent used for extraction of oil is(a)hexane

(b) methyl ethyl etone(c) furfural(d) ben@ene

22. #olvent extracted oil(a) has lo free fatty acid>content(b) is odorless(c) has more of unsaturated oil

(d)none of these23. 'ydroenation of oil does not

(a) remove double bonds(b) rise in meltin point

(c) improve its resistance oxidation

(d)none of these2. Catalyst used in hydroenation of oil is

(a)nicel(b) platinum(c) iron(d) alumina

25. #oaps remove dirt by(a) increasin the surface tension(b) decreasin ettability

(c) supplyin hydrophilic roup(d)none of these

2. 7etallic soap is (a) sodium salt of fatty acids (b) potassium salt of fatty acids (c) both sodium and potassium salt offatty acids

(d) aluminum or calcium salt of fattyacids

2%. deradable deterents(a)can be readily oxidi+ed(b) pose problem in seerae plant(c) have an isopara6nic structure(d) should not be used as it spoils the

cloth32. ?hich of the folloin is a deterentD

(a) fatty alcohol

(b)alyl ben+ene sulfonate(c) fatty acids(d) methyl chloride

33. Eello lycerin is made into hite" usin

(a)acti*ated carbon(b) diatomaceous earth(c) bauxite(d) bentonite

3. 4ssential oils are usually obtained usin(a)steam distillation(b) extractive distillation(c) solvent extraction(d) leachin

35. -lastici@ers are added to paints to (a) mae it corrosion resistant (b) mae lossy surface


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(c) gi*e elasticity and pre*entcracing of the /lm (d) increase atmospheric oxidation3. ?hich oil is preferred for paintmanufactureD

(a)drying oil(b) non>dryin oil(c) semi>dryin oil(d) saturated oil

3%. sinnin aent3$. 4namels(a) gi*e good glossy /nish(b) are same as varnish(c) are prepared from non>dryin oil(d) do not contain piment

+. #O2 is bubbled throuh hot suar>caneFuice to

(a) act as an acidifying agent(b) increase its concentration(c) increase the amount of molasses(d) increase the crystal si@e

1. 7olasses is the startin material for(a)alcohol(b) essential oil(c) fatty acids(d) ether

2. Ahe ideal pulp for the manufacture ofpaper should have hih

(a)cellulose content(b) linin content(c) both (a) and (b)(d) neither (a) nor (b)

3. !n :raft process of paper manufacture"

hite cooin li8uor consists of caustic soda(a)sodium sul/de% sodium carbonate(b) sodium sulte" sodium carbonate(c) sodium sulte" sodium sulde(d) and sodium carbonate

. Comparin sulfate process ith sulteprocess" e nd that

(a) both temperature and pressure informer is less than that in the latter

(b) both temperature and pressurein former is more than that in thelatter

(c) temperature is more in formerhereas pressure is more in the latter

(d) pressure is more in the formerhereas temperature is less in thelatter

5. Cooin li8uor in case of sulte processis (a) sodium sul/te and sodiumbisul/te

(b) manesium sulte and free #O2 inacid medium (c) manesium sulfate and manesiumbicarbonate (d) sodium bisulte. ?hich is a hih>rade pulpD

(a) ra pulp(b) mechanical pulp(c) sulfate pulp(d) sulte pulp

%. ?hich of the folloin paper does notre8uire a ller durin manufactureD

(a) bond paper(b) ritin paper(c)blotting paper(d) colored paper

,. leachin of paper pulp is done ith(a) activated clay(b) bromine(c) chlorine or chlorine dioxide(d) manesium sulte

$. #i@in material is incorporated in paperto

(a) impart resistance to penetrationby li0uids (b) increase its thicness (c) increase its Gexibility and opacity

(d) increase its brihtness5+. Viscose rayon is

(a) cellulose nitrate(b) reenerated cellulose nitrate(c) reenerated cellulose acetate

(d)regenerated cellulose /ber51. ?hich of the folloin coal has the

hihest caloric valueD(a) /inite(b) #ub>bituminous(c) ,nthracite(d) -eat

52. Ahe main product of hih temperaturecarboni@ation is

(a)$oe(b) ;mmonia(c) Aar(d) -henol


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53. 'ih temperature carboni@ationproduces

(a) inferior coe compared to lotemperature carboni@ation

(b) less of ases compared to li8uidproducts (c) larer 8uantity of tar compared tolo temperature carboni@ation

(d) relati*ely low tar and yields ofgaseous products are larger thanthe yield of li0uid

products5. 'ih temperature carboni@ation taesplace at

(a) +++ > 5+++Hcurrent and

tube side if the Go is co>currentd. shell side for larer overall heat transfer co>

e6cient33. ?hen one of the Guids is hihly corrosive andhas foulin tendency" it should

a< preferably :ow inside the tube for itseasier internal cleaning

b. preferably Go outside the tubec. Go at very slo velocityd. Go outside the tube hen the Go is

counter>current and inside the tube henthe Go is co>current

3. !n a shell and tube heat exchaner" theclearance of the tube is enerally

a< not less than one-fourth of the tubediameter or 37

b. more than the tube diameterc. e8ual to the tube diameterd. more in case of trianular pitch as

compared to the s8uare pitch tube layout.35.

a. loer xed chares for the columnb. reater cost for the reboiler heat supply

c. reater cost for the condenser coolant

d< all (a)% (b) and (c)

3$. Optimum reGux ratio in a continuousdistillation column is determined by the

a. maximum permissible vapor velocityb. Goodin limit of the columnc< total cost consideration (/xed cost of

the column plus the cooling water andsteam

cost)d. none of these

+. -ressure drop due to pipe ttins can beestimated by pSR f (/eSK) (V2S2c) here /eR

e8uivalent lenth of straiht pipeline hichill incur the same frictional loss as the ttinand K R diameter of the ttin. Ahe value of/e SK (dimensionless) for 5elbo and 1,+close return bends ould be respectivelyarounda. 5 and 1+ b< #5 and 65c. 1,+ and 3++ d. 3++ and 5++

1. /eSK for $+elbo (medium radius) and $+s8uare elbo ould be respectively around

a< 25 and ! b. 3 and 5

c. 1++ and 25+ d. 25+ and ++2. /eSK for a Aee (used as elbo" enterin run)ould be around

a.5 b< !c. 2++ d. 35+

3. /eSK for a Aee (used as elbo" enterinbranch) ould bea. less than that for Aee (used as elbo" enterinrun)b. more than that for Aee (used as elbo" enterinrun)

c. around $+d< both (b) and (c)

. /eSK for couplins and unions ould bea. + b. 2++ c. 35+ d< negligible5. /eSK for fully open ate valves ould be

a. much more than that for fully open lobevalve

b. much less (say 2& than that for fully openlobe valve)

c. around %d< both (b) and (c)

. /eSK for fully open lobe valve may be arounda. 1+ b. 25 c. %5 d< 3!!

%.


33/56

cT fluid !iscosity, centipoise

optDi

T optimum inside pipe diameter, inches

,.


34/56

usin split Go" radial Go or cascade Gofor column diameter larer than ft.

d< all (a)% (b) and (c)trappin in a distillation column resultsdue to a. lo as velocity

b. hih as velocity c< excessi*e li0uid gradient o*er thetray d. lo reGux ratio,. ; calmin section belo the li8uid Gos intothe doncomer is provided to

a< permit release of entrained *apor inthe li0uid b. reduce the dischare Guctuation c. ensure better vapor li8uid contract d. cool the li8uid before it Gos don.

$. Ahe lenth of straiht rectanular eir usedon cross>Go trays is enerally a< !


35/56

(d) both a and c12. ode diaram is a plot of

(a) log (AR) *s< log (f) and M *s< log (f)(b) lo (AR) vs. fand lo ] vs. f(c) AR vs.lo (f) and ] vs. lo (f)(d) lo (;) vs. lo f

13.


36/56

3%. !nstrumentation in a plant o*ers the advantae of (a) reater safety of operation (b)better 8uality of product (c) reater operation economy (d) alla% b and c3,. Kilatometer is used to measure (a) stress (b) strain

(c)deGection (d) contraction7expansion due tochanges in temperature3$. #talamometer is used for the measurement of (a) inematic viscosity (b)surface tension

(c) refractive index (d) optical activity+. #troboscope is used for the measurement of(a) rpm of a :ywheel (b) fre8uency of liht (c) depression of free@in point (d)li8uid level under pressure1. 7inute depression of free@in point of a li8uidsolvent or addition of a solid solute

can be best measured by (a) Aecman thermometer (b)dilatometer

(c) mercury thermometer (d)bimetallic thermometer2. =ain marin is e8ual to the

(a) amplitude ratio (b) reciprocal ofamplitude ratio (c) ain in Pcontroller (d) ain in P-Icontroller3. -hase marin is e8ual to (a) !4 - phase lag (b) phase la > 1,+H(c) phase la J 1,+H (d) phase la > $+H. ; system ith a transfer function YY2s Y is

s J 1 (a) @ero order (b) st order (c) 2nd order (d) 3rd order5. ode stability method uses (a) open loop transfer function(b) closed loop transfer function

(c) either a or b (d) neither a nor b. outh stability method uses (a) open loop transfer function(b) closed loop transfer function (c) either a or b (d) neither a nor b%. 9ichel^s chart deals ith

(a) ;.. vs. phase la of rst order(b) ;.. vs. phase la of second order(c) closed loop *alues *s< open loop *alue

(d) fre8uency response values of controllers,. Ahe Guid used in hydraulic controller is (a) ater (b) steam (c) air (d) oil$. 9umber of poles in a system ith transfer function

YYYYYYYY1YYYYYY issZ J 2sZ J 1

(a) 2 (b) 5 (c) 3 (d) 15+. ?hich of the folloin controllers has maximumo*setD (a) P-controller (b) P-I controller (c) P-D controller (d) P-I-D controller51. -rocess derees of freedom

(a) indicates the maximum number ofcontroller to be used

(b) indicates the minimum number of controller tobe used

(c) determines both maximum and minimumnumber of controllers to be used

(d) ives no idea of controllers52. esistance of a as in a vessel is (a) JJVJJ (b) nRT

nRT V (c) nRT (d) YYP_ P nRT52. !n an exothermic chemical reactor" themanipulated variable is the Go rate of (a) coolant (b) reactant (c) product (d) hot Guid53. Bse of I-control alon ith P-control facilitates (a) elimination of o;set (b)reduction of o*set

(c) reduction of stability time (d)both b and c5. ?hich of the folloin error interal is consideredas the best criterion in controller settinsD (a) _` e dt (b) _` e dt

+ + (c) P e2 dt (d) both a and b

!55. Cascade control means (a) feed forard control

(b) more than one feed-bac loop (c) on>o* control (d) one feed>bac loop5. ?hich of the folloin controllers has the leasmaximum deviationD (a) P-controller (b) P-I controller (c) P-I-D controller (d) P-D controller5%. 7easurement of pressure in ammonia reactor isdone by(a) Aourdon gauge (b) B>tube manometer

(c) !nclined tube manometer (d) -irani aue5,. -ressure of +.+1 psi (absolute) can be measuredby (a) !oni@ation aue (b) -irani aue (c) Qcleoid gauge (d) ourdon aue5$. Continuous measurement of moisture in paper is

done by(a) slin psychrometer(b) hair>hyrometer(c) eihin(d) high resistance% Rheatstones bridgecircuit

+. -ressure of +.+++1 absolute psi can bemeasured by (a) Qeloid gauge (b) -irani aue(c) Ahermocouple aue d) ourdon aue1. 4.m.f. enerated by thermocouples is of the ordeof (a) milli*olts (b) microvolts (c) volts d) bi>metallic thermometer

2. 7easurement of sub>@ero Celsius temperature inindustry is done by (a) thermocouples (b) resistancethermometers

(c) as thermometer (d) bi>metallicthermometer3. #tartin temperature of optical radiationpyrometer is

(a) !!4$ (b) ++HC (c) 12++HC (d) 15++HC. ?hich thermocouple can be used to measuretemperature around 1++HCD (a) copper>constantan (b) aluminum>chromel (c) platinum-platinumLrhodium


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(d) copper>aluminum5. p' meter has (a) one cell (b) two cells (c) three cells (d) no cell. 7aximum di*erential pressure in li8uid manometeris (a) 2+ psi (b) 3! psi (c) + psi (d) 5+ psi%. !nterfacial level in pressure vessel is measured (a) Goat (b) manometers of :oat type (c) B>tube manometer d) ourdon aue,. notch b) rectanular notch (c) circular pipe (d) @ennison no++le$. Composition of natural as can be determined by(a) chromatograph b) orsat apparatus (c) spectrometer d) photometer%+. ellos are made of (a) leather (b) paper (c) plastic d) thin copper%1.


38/56

(c) Q3 (d) 1 SQ$5. Ahermistor is a

(a) semiconductor whose resistancedecreases with temperature rise (b) metal hose resistance increases linearlyith temperature rise (c) metal hose resistance does not varyith temperature

(d) device for measurin nuclear radiation$. ?hich of the folloin factors does notinGuence measurement accuracyD (a) static and dynamic error b) reproducibility (c) dead @one (d) none of these$%. ?hich of the folloin is suitable formeasurin the temperature of a red hot movinobFect (e.g.steel inots on roller table) D (a) thermocouple (b) radiation pyrometer(c) thermistor (d) radioraph$,. Ahermocouples

(a) have very slo speed of response(b) can^t be connected to the measurininstrument remotely located

(c) need cold Uunction compensation

(d) are much less accurate compared tobimetallic or vapor pressure thermometer

$$. #election of material for thermocoupledepends on the

(a) depth of immersion in the hot Guid (b) minimum and maximum temperature

(c) pressure and velocity condition of theGuid hose temperature is to be measured(d) both a and b

1++. adiation pyrometers(a) have very lo speed of response

(b) need not [see\ the temperature source itis measurin (c) can^t measure temperature of obFectsithout main physical contact(d) none of these

1+1. V>notch is used to measure Go rate of ali8uid in

(a) an open channel(b) a non>circular cross>section closed channel (c) vertical pipeline (d) hori@ontal pipeline1+2. ?hich of the folloin is not a headGometerD(a) semental orice plate (b) pitot tube (c) rotameter (d) Go no@@le1+3. o* control (a) fully opens the nal control element

hen the measured variable is belo theset point

(b) fully closes the nal control element henthe measured variable is above the setpoint

(c) is a two position (fully open or fullyclosed) control ade0uate to control aprocess with slow reaction rate andminimum dead time or transfer lag

(d) all a" b" and c1+$.


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a< an intimate mixture of saw dustand iron dust (i


40/56

2$. Kry chlorine can be handled in a vessel madeofa< iron or steel b. -VCc. nicel d. brass

3+. Aan furnace used for meltin of lass is madeofa. mild steel b. cast ironc< refractory blocs d. stainless steel

31. #tainless steel containsa< chromium and nicel b. copper

c. aluminum d. vanadium32. Caustic soda is reduced in a mercury cell

havin anode and cathode made respectivelyofa. movin mercury and raphiteb< graphite and mo*ing mercuryc. movin mercury and carbond. movin mercury and crimped steel ire

33. 7onel metal is an alloy ofa. molybdenum and nicelb< nicel and copperc. molybdenum and aluminumd. molybdenum and @inc

3. =erman silver is an alloy ofa< copper% nicel and +inc

b. copper" aluminum and silverc. silver" @inc and aluminumd. silver" nicel and @inc

35. Chromel (9ichrome) is an alloy ofa. chromium and molybdenumb< nicel and chromiumc. molybdenum and niceld. chromium and aluminum

3. Brea autoclave is made ofa. cast iron b. refractory blocsc< stainless steel d. lead lined steel

3%. #teel toer used for storae of oleuma. is lined ith leadb< need not be linedc. is lined ith rubberd. is lined ith acid>proof brics

3,. 'ydrochloric acid is stored ina. lead lined steel vessel b< rubber-lined steel *esselc. stainless steel vesseld. cast iron vessel

3$. -hotoraphic plates are coated ina. silver nitrate b< sil*er halidec. calcium silicate d. metallic silver

+. ;8ueous nitric acid is stored in a. steel drum b< stainless steel *essel

c. cast iron vessel lined ith acid>proofmasonry bricd. cast iron vessel

1. #O3is absorbed usin '2#Oina. cast iron paced toerb. stainless steel plate toerc< paced steel tower lined with acidproof bricsd. none of these

2. 'ydrochloric acid absorber is made ofa. cast iron b. mild steelc< arbate d. stainlesssteel

3. #ulfuric acid is mixed ith round phosphateroc (to produce phosphoric acid) in a steeldiester lined itha. acidic refractory b. rubber

c. arbate d< lead or acid-proof brics.


41/56

5. ;bility of a material to absorb enery indeformation in the plastic rane ischaracteri@ed as itsa. ductility b< toughnessc. creep d. resilience

5%. #lo and proressive deformation of amaterial ith time under constant stress iscalleda< creep b. erosionc. resilience d. none of these

5,. ?rouht iron isa< high carbon ironb. hihly resistance to acid corrosionc .malleable and ductile hence used forchain lins" hoos and couplinsd. an alloy of iron" chromium and carbon

5$. ?hich of the folloin constituents of castiron is mainly responsible for impartin itan anti>corrosive propertyDa< silicon b. phosphorusc. sulfur d. none of these

+. 7ild steel isa< a low carbon steel (!

1. -resence of mananese in alloy steelimproves itsa. corrosion resistance

b. cuttin abilityc< abrasion resistance and toughness

d. elasticity and creep resistance2.'2#O(I5+& concentration) is corrosivetoa< aluminum% mild steel% stainlesssteel% concrete and tinb. copper" cast iron and hih silicon iron(1& #i)c. rubber (butyl and hard) silicon rubberand teGond. lass" raphite" porcelain andstoneare

3. ;luminum storae vessel can be used tostorea. a8ua reia b. ferrous sulfatec. hydrochloric acid (1+&) d< none

. rass container is suitable for storina. a8ueous ammonia b8E and porcelain

b. cast iron and aluminum c. stainless steel and hih silicon cast iron

d. copper" nicel and monel$,. ?hich of the folloin material of

construction may be recommended by a chemicaenineer

for handlin a aseous chlorine (dry or et)stream in a Guid Go systemD

a< "igh silicon iron% silicone rubber%

@el- and te:on b. 7ild steel and stainless steel c. Cast iron" tin and aluminum d. Copper" nicel and monel $$. ?hich of the folloin materials may prove

unsuitable for handlin acetic (lacial andanhydrous) at +HCD

a. silicone rubber" teGon" porcelain andood b. nicel" monel" stainless steel andraphite

c. aluminum" copper" hih silicon iron d< brass% cast iron% mild steel and tin

1++. 1++& '2#O at 3+HC can0t be used andstored in a vessel madeS lined itha. cast iron and hih silicon iron

b. mild steel and stainless steelc< aluminum% tin and rubber

d. teGon" lass and porcelain

1. Ahe folloin cost item hich in common both thexed and operatin cost of an enterprise isQa< interest b. depreciationc. taxes d. supplies


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2. Ahe lenth of time" usually in years for thecumulative net annual prot to e8ual theinvestment is calledQa. receivable turnover b. return of investmentc. price earnin ratio d< paybac period

3. Ahe reduction in value and maretability due tocompetition from neest products S modela. depreciated cost b. xed costc. indirect cost d< obsolescence

.


44/56

32. Ahe value hich is usually determined by thedisinterested third party in order to establish aprice that is fair to both seller and buyer.a< fair *alue b. maret valuec. salvae value d. boo value

33. Ahe price that can be obtained from the sale ofproperty or second handa. boo value b< sal*age *aluec. fair value d. maret value

3. Ahe process of determinin the value of certainproperty for specic reasonsa. amorti@ation b< appraisalc. investment d. depreciation

35. ; bond hereby the security behind it are thee8uipments of the issuin corporationa. debenture bond b< lien bondc. collateral bond d. mortae bond

3. ;n annuity here the payment period extendsforever or in hich the periodic payment continueindenitely.a. ordinary annuity b. deferred annuityc. annuity due d< perpetuity

3%. !t is the span of life of an e8uipment durin hich itproduces the product it is desined to produce at aprot

a. rite o* period b. physical lifec< economic life d. perpetual life3,. !t is a depreciation method hereby the decrease

in value of the unit is constant each yeara< Qatheson formulab. #traiht line methodc. #EK method d. #inin fund method

3$. !t is a distinct leal entity separate from theindividual ho on it and hich can enae inpractically any business transaction hich a realperson can do.a. sole proprietorship b. partnershipc< corporation d. all of the above

+. Ahese are costs hich remain relatively constantreardless of any chane in operation or policyhich is made.

a< /xed cost b. increment costc. variable cost d. di*erential cost

1. Ahe lenth of time at hich the oriinal cost ofcapital used to purchase a unit have already beenrecovered.a. economic life b< write o; periodc. physical life d. salvae life

2. Ahe actual interest earned by a iven principal isnon asQa. compound interest b. nominal interestc. simple interest d< e;ecti*e interest

3. Ahe exclusive riht of a company to provide aspecic product S services in a iven reion of thecountry.

a< franchise b. branchc. extension d. outlet. !t occurs hen a commodity or service is supplied

by a number of vendors and there is nothin toprevent additional vendors enterin the mareta. free maret b< perfect competitionc. open maret d. la of supply and demand

5. !n main economy studies" a minimum re8uiredprot on the invested capital is included as a cost.a. rate of return b< annual cost patternc. present orth pattern d. capital cost

. Kepreciation method here the value of an assetdecreases at a decreasin rate.a< SX= method b. sinin fund

c. straiht line method d. declinin balance%. Cost of thins that are neither labor nor materials

a. construction cost b< expensesc. labor cost d. investment

,. :ind of obliation hich has no condition attacheda. analytic b< gratuitousc. private d. pure

$. =ross" prot" sales less cost of oods sold as apercentae of sale is calleda. prot marin b. ross marinc< HOC (rate of return) d. price earnins

5+. Ahe series of e8ual payments at e8ual intervals oftimea. interest b. depreciationc< annuity d. amorti@ation

51. ; leally bindin areement on promise toexchane oods or servicesa. contract b< barterc. memorandum d. pro>forma

52. ;n index of short term payin ability is calleda. current ratio b. receivable turnoverc< acid test ratio d. prot marin ratio

53. Bsed to produce consumer oodsa< producer goods b. supplyc. consumer oods d. cash Go

5. !t is a series of e8ual payments occurrin at e8ualinterval of time here the rst payment is madeseveral periods after the beinnin of the paymenta< deferred annuity b. delayed annuityc. proressive annuity d. simple annuity

55. ; maret hereby there is only one buyer of anitem for hich there are no oods substitutea. monopoly b< monopsonyc. oliopoly d. oliopsony

5. Ahe amount of a property in hich a illin buyerill pay to a illin seller for the property henneither one is under the compulsion to buy or sella. fair value b. oodill valuec. boo value d< maret *alue

5%. ; type of annuity here the payments are made atthe start of each period" beinnin from the rstperioda. ordinary annuity b< annuity duec. deferred annuity d. perpetuity

5,. ; method of computin depreciation in hich theannual chare is a xed percentae of thedepreciated boo value at the beinnin of theyear to hich the depreciation appliesa. straiht line b. sinin fund methodc. #EK method d< declining balance method

5$. Ahe cumulative e*ect of elapsed time on themoney value of an event based on the earninpoer of e8uivalent invested funds capital shouldor ill earn

a. present orth factor b. interest ratec< time *alue of money d. yield+. Kouble taxation is a disadvantae of hich

business orani@ationDa. sole proprietorship b. partnershipc< corporation d. enterprise

1. Ahe function of interest rate and time thatdetermines the cumulative amount of a sininfund resultin from specic periodic depositsa< sining fund factorb. present orth factorc. capacity factor d. demand factor

2. Ahe intanible item of value from the exclusiveriht of the company to provide a specic productor service in a stated reion of the country


45/56

a. maret value b. boo valuec. oodill value d< franchise *alue

3. Ahe lenth of time durin hich it is capable ofperformin the function for hich it as desinedand manufactured.a. economic life b. business lifec. insular life d< physical life

. -roducts that are directly used by people to satisfytheir ants.a. supply b< consumer goodsc. producer oods d. cash Gos

5. ; chane in cost for a small chane in volume ofproduction.a. xed cost b. sun costc. rst cost d< di;erential cost

. ;n amount hich has been spent and for somereasons cannot be recovered.a< sun cost b. rst costc. increment d. xed cost

%. Ahe di*erence beteen the boo value and theactual loer resale value isa. salvae value b. resale valuec< sun cost d. xed cost

,. !t occurs hen a uni8ue product or service isavailable only from a sinle supplier and entry of

all other possible suppliers presented.a. competition b< monopolyc. inventory d. protability

$. ; place here buyer and seller come toethera< maret b. shopc. department store d. parlor

%+. atio of annual net prot and the capital investeda. proportion b< rate of returnc. load factor d. use factor

%1. Ahe price of hich a illin buyer ill pay to aillin seller for a commoditya. resale value b< maret *aluec. boo value d. scrap value

%2. Ahe price of property hen sold for a Funa< scrap *alue b. boo valuec. resale value d. maret value

%3. ;n interest earnin fund in hich e8ual depositsare made at e8ual intervals of timea. annuity b< sining fundc. interest d. investment

%. ; term describin ealth hich is placed in abusiness and could include cash e8uipment" ramaterials and nished productsa< capital b. investmentc. collateral d. assets

%5. Ahe rst cost of any property includesa. the oriinal purchase price and freiht and

transportation charesb. installation expenses

c. initial taxes and permits0 feed< all of the abo*e

1. The hydrogen or deuterium discharge tube can be used as asource of continuous ultraviolet radiation for spectrophotometersbecause ofa. the characteristics of chopper-modulated radiationb. pressure broadening of hydrogen or deuterium

emission linesc. the great sensitivity of photomultiplier tube

d. the narrow band pass of modern grating omonochromators

2. Chopping the source beam in conjunction with the use of atuned ac amplifier in an atomic absorption spectrophotometeaccomplishes the followinga. a recording potentiometer can be used instead of a

voltmeter for the readoutb. a less sensitive detector can be used instead of the usua

photomultiplier tubec. a cooler can be used without decreasing the population o

ground-state atomsd. radiation emitted by excited atoms in the flame will no

interfere with the absorbance measurement3. Line spectra are emitted by

a. hot solidsb. ecited polyatomic moleculesc. molecules in the ground electronic stated. excited atoms and monatomic ions

!. "ecording spectrophotometers sometimes operate withfeedbac# loops that vary the power of the reference beam until imatches the power of the beam through the sample. This modeof operationa. eliminates the need for a continuous source

b. re$uires two monochromatorsc. eliminates the need for nonabsorbing solventsd. makes the detector a null device, with the result tha

nonlinear response to radiant power would not bedeleterious

%. &hich of the following best eplains why atomic absorption issometimes more sensitive than flame emission spectroscopy'a. At the temperature of a typical flame, the population o

ground-state atoms is much greater than thepopulation of excited atoms.

b. (etectors employed in absorption wor# are inherently moresensitive than those used to measure emission.

c. )ollow cathode discharge tubes have a much greate

radiant power output than do ordinary flames .d. *n absorption line in a flame is always much sharper than

an emission line because of the (oppler effect.+. The method of standard addition compensates for matri effects

provideda. the addition does not dilute the sample appreciably

and does not itself introduce appreciable quantities ointerfering substances

b. the addition di lutes the sample enough that theconcentrations of interfering substances are lowered tonegligible values

c. the addit ion contains none of the substance beingdetermined

d. the addition contains a large enough $uantity of somesubstance to swamp out sample variations

,. e3and Cu2form complees with /(T*. The ferric comple iscolorless 0 as is e3 itself0 at the concentration involved herethe copper comple is a deep blue color deeper than the colorof Cu2itself0 while /(T* is colorless. The photometric titrationcurve below was obtained when a solution containing both e 3

and Cu2was titrated with /(T* using a spectrophotometer seat a wavelength of ,!% nm in the visible region of the spectrum.


46/56

ml of /(T* solution

a. A is the iron end point.b. 4 is the iron end pointc. The distance from * to 4 on the milli liter ais

represents the $uantity of irond. The $uantity of iron could not be calculated from a

graph li#e this unless the $uantity of copper in thesolution was #nown ahead of time

5. 6n chromatography0 a substance for which the distribution of thecoefficient0 70 is 8ero may be used to estimate

a. the volume within the column occupied by the pac#ingmaterials

b. the total volume of the columnc. the volume within the pores of the pac#ing materiald. the volume within the column available to the mobile

phase9. The purpose of the solid support material in a :LC column is to

a. immobilize the stationary liquid phaseb. adsorb sample components that are insufficiently soluble in

the stationary li$uid phasec. provide a ;bac#up; stationary phase in the event that the

li$uid is lost by evaporationd. remove impurities from the carrier gas

1


47/56

c. #$Cd. *dsorption chromatography with gradient elution

22. To deioni8e tap water by ion echange for laboratory use0 thebest approach employsa. a column containing a strong-acid cation echange in the

hydrogen formb. a column containing a strong-base anion echanger in the

hydroyl formc. a mied-bed column containing a strong-acid cation

echanger in the sodium form and a strong-base anionechanger in the chloride form

d. a mixed-bed column containing a strong-acid cationexchanger in the hydrogen form and a strong-baseanion exchanger in the hydroxyl form

23. Line spectra are emitted bya. incandescent solidsb. ecited moleculesc. molecules in the ground electronic stated. excited atoms and monatomic ions

2!. 4and spectra are emitted bya. tungsten lamps and @ernst glowersb. excited molecules in the vapor phasec. ecited atoms and monatomic ions

d. incandescent solids2%. * chemical engineer is conducting research on the development

of analytical methods based upon chemiluminescence. 6f aconventional spectrofluorometer is used for the measurements0an the instrument has separate switches for its various circuits0

which switch will be left in the ;off; position'a. detector power supplyb. amplifierc. source power supplyd. power to the motor drive of the scanning monochromator

on the emission side of the instrument2+. 6n flame spectroscopy0 the highest temperature fuel oidant

combination available as yet is

a. hydrogen-oygenb. hydrogen-nitrous oidec. acetylene-oxygend. acetylene-nitrous oide

2,. 6f the change in a molecule caused by absorption of light energyinvolves change in the average separation of the nuclei of two ormore atoms0 then the change isa. electronicb. vibrationalc. translationald. rotational

25. The nephelometric method of analysis is based upona. 4eerAs lawb. ajarAs lawc. 4ouger lawAsd. %eer $ambert&s $aw

29. 6" spectro-photometers have practically the same basiccomponents as visible and B spectro-photometers. 6n which ofthe following basic components could the devices be usedinterchangeable in botha. sources of radiant energyb. optical systemc. sample holdersd. detectors

3


48/56

b. column temperaturec. volume of compound analy8edd. volatility of compound analy8ed

1. The main component of air is DDDDDDDDDDDD.a. oygen b. argon c. carbon dioide

d. nitrogen e. methane2. Ef the following0 DDDDDDDDDDDD is characteristic of gases.

a. :ases are highly compressibleb. These are relatively large distances between

moleculesc. :ases form homogenous mitures regardless of the

non-reacting gas componentsd. All of thesee. * gas epands spontaneously to fill its container

3. Ene significant difference between gases and li$uids isthat DDDDDDDDDDDDDDDDDDDDDD.a. a gas is made up of moleculesb. a gas assumes the volume of its containerc. a gas may consist of both elements and compounds

d. gases are always miturese. all of these answers are correct

!. Folecular compounds of low molecular weights tend to begases at room temperature. &hich of the following is mostli#ely not a gas at room temperature'

a. Cl2 b. )Cl c. $iCld. )2 e. C)!

%. :aseous mitures DDDDDDDDDDDDDDDD.a. can only contain moleculesb. are all heterogeneousc. can only contain isolated atomsd. are all homogenous

e. must contain both isolated atoms and molecules+. &hich one of the following is @ET true about the unit

?ascal pa'a. 1 ?a G 1 @Hm2b. The ?a is the >6 unit for pressurec. 1 atm G 1i unit for force

,. The first person to investigate the relationship between thepressure of a gas ad its volume was DDDDDDDDDDDDDDDD.a. *madeo *vogadrob. Lord 7elvin

c. Iac$ues Charlesd. "obert %oylee. Ioseph Louis :ay-Lussac

5. Ef the following0 DDDDDDDDDDDD is a correct statement of4oyleJs law.a. ) * constantb. ? G constant

c. G constant

?d. G constant

T

e. n G constant?

9. Ef the following0 DDDDDDDDDDDDDD is a valid statement ofCharlesJ law.a. ? G constant

Tb. * constant

#c. ? G constant

d. G constant ne. G constant ?

1


49/56

e. decrease the temperature and increase the pressure1+. >tandard temperature and pressure >T?0 in the contet

of gases0 refers to DDDDDDDDDDDDDDDDDDDD.a. 295 7 and 1 atmb. 0 and ( atmc. 295 7 and 1 torrd. 2,3 7 and 1 pascale. 2,3 7 and 1 torr

1,. Ef the following0 DDDDDDDDDDDDDD correctly relates

pressure0 volume0 temperature0 amount mol0 molecularmass F0 density d and mass g.a. F G d"T

?b. 1 * g"#

)c. F G ?T

:"d. F G g

"Te. F G "T

:v

15. Ef the following0 DDDDDDDDDDDDD correctly relatespressure0 volume0 temperature0 amount mol0 molecularmass F0 density d and mass g.a. d * )1

"#b. d G g"T

?Fc. d G ?TF

g"d. d G g

"Te. d G "T

?F19. Ef the following gases0 DDDDDDDDDDDD will have the

greatest rate of effusion at a given temperature.a. @)3 b. C2/ c. *r

d. )4r e. )Cl2ubtracting the vapor pressure of water from the total

pressure of a gas collected over water is an eamplea. *vogadroJs )ypothesis b. !alton3s law

c. :rahamJs law d.van der &aals Theory e. ideal gas law

2!. The energy of molecules of a gasa. is dependent on concentrationb. is distributed over a wide range at constant

temperaturec. is the same for all molecules at constant temperatured. increases with a decrease in temperaturee. increases with an increase in pressure

2%. &hich of the following assumptions is not used to eplainthe ideal gas law'a. gas particles themselves occupy a negligible percent

of total gas volumeb. inter-particle forces are negligible in gasesc. collisions between gas particles are perfectly elasticd. collisions between gas particles and container walls

are perfectly elastic

e. individual gas particles are perfectlycompressible to nuclear size

2+. 6f someone were to light a cigar at one end of a closedroom0 persons at the other end of the room might soonperceive an odor due to gaseous emissions from the cigar>uch a phenomenon is an eample ofa. monometry b. ideality

c. effusion d. diffusion e. barometry2,. The fact that a balloon filled with helium will lea# more

slowly than one filled with hydrogen is eplained by citinga. *vogadroJs hypothesis b. (altonJs law c. 4raham3s lawd. van der &aals Theory e. ideal gas law

25. :ases tend to behave ideally ata. low temperature and low pressureb. low temperature and high pressurec. high temperature and low pressured. high temperature and high pressuree. gases always behave ideally

29. *ssuming ideal gas behavior0 which of the following gaseswould have the lowest density at standard temperatureand pressure'a. >+b. C2Cl2c. CE2d. 5 e. 7r

3T? is

a. C)! b. @)3 c. 5e d. )2 e. )e31. Ahe phenomenon in hich a steel needle can" ith

proper care" be made to Goat on the surface ofsome ater illustrates a property of li8uid nonasQa. compressibility b. polari@ability c< surfacetension d. triple point e. viscosity

32. Ahe property of li8uid that measures its resistanceto Go is calledQ

a. capillarity b. polari@ability c. resistivityd< *iscosity e. etability

33. ; li8uid ill [et\ a surface ifQ


50/56

a. the li8uid has a lesser density than the surface

b. the forces beteen the li8uid molecules areea

c. the li8uid has a lo vapor pressured< the forces between the molecules and the

surface are greater than the forcesbetween the molecules of the li0uid

e. none of these ansers3. ?hich of the folloin statements concernin

molecules in the li8uid state is trueD a. Cohesive forces are not important b. Ahemolecules contract to t the si@e of the container c. Ahe molecules have no motion

d. Ahe molecules in a patterned(oriented) arranement e< 8he molecules are mobile and relati*elyclose together

35. Ahe temperature ate hich the vapor pressure of ali8uid e8uals the external pressure is called the Q

a< boiling point b. critical point c. meltin point d.sublimation point e. thermal point3. /i8uid and vapor phases of a substance become

indistinuishable at theQa. triple point b. normal point c. permanent point

d< critical point e. absolute point3%. ?hen a li8uid is in dynamic e8uilibrium ith its

vapor at a iven temperature" the folloinconditions could existQ

(!) Ahere is no transfer of moleculesbeteen li8uid and vapor

(!!) Ahe vapor pressure has a uni8ue value(!!!) Ahe opposin processes" (li8uid to

vapor) and (vapor to li8uid)" proceed ate8ual rates

(!V) Ahe concentration of vapor isdependent on time

?hich of the above choices are applicableD a. ! b< CC and CCC c. !" !!" and !!! d. !! and !V

e. none of these combination3,. ?hich of the folloin does 9OA describe thecritical point of a li8uidDa. Ahe temperature and pressure at hich a

li8uid^s meniscus disappearsb< 8he point where the *apor pressure cur*e

intersects the fusion temperaturec. Ahe hihest temperature at hich a li8uid can

existd. Ahe temperature and pressure at hich a li8uid

and its vapor are identicale. Ahe hihest temperature at hich it is possible

to obtain a li8uid form its vapor by increasinpressure

3$. ; container holds a small amount of li8uid and its

vapor in e8uilibrium !f the volume of the containeris decreased" hich of the folloin has occurredonce e8uilibrium is reestablishedDa. the temperature is loerb< the temperature is higherc. the pressure is hiherd. the pressure is loere. none of these

+. ?hen the vapor pressure of a li8uid e8ualsatmospheric pressure" the temperature of theli8uid e8ualsQa. 1++C b< boiling pointc. the normal boilinpoint d. the vapori@ation point

1. ?hen a li8uid is in e8uilibrium ith its vapor in aclosed containerQa< 8he rate at which molecules from the

li0uid phase enter the gas phase exactlye0uals the rate at which molecules fromthe gas phase pass into the li0uid phase

b. ; chane in temperature ill not chane thepressure in the container

c. Ahe amount of as in the container mustexactly e8ual the amount of li8uid

d. 7olecules cannot o from the li8uid phase tothe as phase because the amount of li8uid inthe container is constant

e. Ahe vapor ill radually chane bac to theli8uid state" that is" no vapor ill be left

2. Bnder hich of the folloin conditions illvapori@ation best occurDa< hih mass" lare surface area" hih inetic

eneryb< wea forces between molecules% high

inetic energy% large surface areac. hih molecular enery" small surface aread. lo inetic enery" stron molecular forces"

lare surface areae. small surface area" lo inetic enery" lo

molecular mass3. ?hich of the folloin does 9OA decrease rate ofvapori@ationDa


51/56

,. ;ll of the folloin are loical conse8uences of theobserved macroscopic properties of crystals4PC4-Aa. Ahe atoms or molecules of a crystal are

arraned in a reularly repeatin patternb. Ahe forces holdin the atoms in a metal crystal

are the same for essentially every atom exceptat the surface

c< 8he distances between adUacent atoms ormolecules *ary greatly

d. #ome defects are present in the crystals$. ?hich of the folloin has the larest number of

lattice points per unit cellDa. Ahe primitive (simple) cubic latticeb< 8he face centered cubic lattice c. Ahe body centered cubic latticed. ;ll these lattices have the same number oflattice points per unit cell

5+. ;ll of the folloin are true about lattice points in acrystal structure 4PC4-A a. Ahe rst lattice point can be placed at anylocationb. ;ll lattice points have identical environmentsc. Ahe corners of unit cells are located at latticepoints

d< ,toms are always located on lattice points51. ;ll of the folloin statements are true 4PC4-Aa< Ahe face>centered cubic lattice is identical to

the cubic closest paced latticeb< 8he body-centered cubic lattice is

identical to the hexagonal closest pacedlattice

c. Ahe cubic closest paced and hexaonalclosest paced structures have identicalfractions of space hich are occupied by atoms

d. Ahe density of a metal sample is independentof the si@e of the sample considered

52. ?hich of the folloin represents the minimalamount of date necessary to determine the atomicmass of a metalDa. ;voadro^s number and the density of the

metalb. ;voadro^s number" the density of the metal

and the lenth of the unit cell edec< ,*ogadros number% the density of the

metal% the length of the unit cell edge andthe type of lattice

d. ;voadro^s number" the density of the metal"the lenth of the unit cell ede" the type oflattice and the atomic radius of the metal

53. ?hich of the folloin is assumed hen calculatinatomic radii of metals form crystalloraphic dataDa. Ahe atoms are soft spheres that are deformed

in the structure

b. Ahe atoms are almost perfect cubesc. Ahe atoms are of di*erent si@es and the valuecalculated for the radius is an averae

d< 8he atoms in the structure are touching5. ?hat is the usual relationship beteen the number

of valence electrons and the number of nearestneihbors of a metal atom in a solid metalDa< 8he number of *alence electrons is less

than the number nearest neighborsb. Ahe number of valence electrons is reater

than the number of nearest neihborsc. Ahe number of valence electrons is e8ual to the

number of nearest neihbors

d. Ahe number of valence electrons can be lessthan" reater than" or e8ual to the number ofnearest neihbors

55. ;ll of the folloin are conse8uences of the theoryof the structure of metals 4PC4-Aa. 7etals conduct electricity b. 7etals aremalleable c. 7etals are ductile d< Qetalsbrea easily when they are bent

5. ?hich of the folloin is the reason that metalsconduct electricityDa. Ahe metal atoms are close toetherb. Ahere are no empty spaces in metal structuresc< Electrons in the structure can mo*e freelyd. 4lectrons and protons in the structure can

move freely5%. ?hich of the folloin is the reason hy salt stay

bonded in the solid stateDa. Ahere are stron covalent bonds beteen the

ionsb. Ahe structure consists of salt molecules tat

bind tihtly to other salt moleculesc. Ahey are held toether by electrostatic

attractions and the structure includes noelectrostatic repulsions

d< 8here are both electrostatic attractions

and repulsions within the structure butthe total of the attractions is greater5,. ;ll of the folloin are possible crystal defects

4PC4-Aa. ;n atom or ion out of its reular position and

occupyin a normally empty holeb< , crystal in which he only defect is one

pair of ions of the same charge which aremissing

c. ;n electron occupyin a site that is normallyoccupied by a 1 anion

d. ; crystal containin some ion sites empty andsome ions not bearin the expected chare

5$. ?hich of the folloin is the most importantexplanation for the conductivity of metalsDa. they are almost all solids b< their coordinationnumbers are highc. Aheir numbers of valence electrons are hih

d. Aheir densities are hih+. ?hich of the folloin pairs is isoelectronicD

a. ;!# and - b. =e;s and #e c b. ;1 c. C d. O

5. ;ll of the folloin statements about 9aClcrystalline lattice are true" 4PC4-Aa< E*ery $l is surrounded by # &a at e0ual

bond lengths% and *ice *ersab. Ahe structure alon the x"y and @ axes of the

unit cell is all the samec. !f the lenth of one side of the unit cell and the

atomic eihts of 9a and Cl are non" thenthe density can be calculated

d. Ahe unit cell is cubic even thouh the 9a and Clions have di*erent ionin radii

. ;ll of the folloin statements about the di*erentforms of solid C are true" 4PC4-Aa< =iamond is transparent and shows no

color because its band gap is 0uite largeb. =raphite slides easily because the C atoms arestronly bonded in only to dimensions

c. !n diamond the structure around each C atomis due to C sp3hybridi@ation

d. Kiamond is hard yet brittle because the bandap is lare

%. #olids ith lon>rane microscopic order in theirstructures are calleda. amorphous b< crystalline c.lasses d. metals e. none ofthese

,. ; specimen is subFected to x>ray di*raction. Aheresultin di*raction pattern contains many sharplydened spots. Ahe specimen isa. aseous b< crystalline c.amorphous d. plastic e. li8uid

$. ; specimen is subFected to x>ray di*raction. Aheresultin di*raction pattern contains three di*userins close to primary x>ray beam. Ahe specimen isa. aseous b. crystalline cfold rotation b. a 3>fold rotation c. asmirror line or plane d< all of these

%2. ;bout half of all the crystals studied so far belonto the YYYYYY crystal systema. hexaonal b. orthorhombic c. cubic

d. triclinic e< monoclinic%3. Ahe crystal system ith the minimum symmetry

re8uirement of one >fold rotation isa. orthorhombic b. cubic c>> describe the YYYYYYYYY unit cell.a. tetraonal b< orthorhombic c. monoclinic

d. hexaonal e. trional%$. Ahe conditions >>> ag b g c" alpha R amma R $+"

g $+>>> describe the YYYYYYY unit cella. tetraonal b. orthorhombic

c< monoclinic d. hexaonal e. trional,+. Ahe number of lattice points in the unit cell for the

body>centered cubic lattice isa. 1b< 2 c. 3 d. e. ,

,1. centered cubic unit cell" each cornercontributes YYYYY lattice points to the unit cella< 7 b. c. j d. 1 e. none of these

,2. !n a face>centered cubic lattice" each lattice" eachlattice point located in a face of the unit cell isshared e8ually ith YYY other unit cella< b. 3 c. 5 d. % e. none of these

,3. ; metal crystalli@es in a body>centered cubiclattice. ?hich of the folloin correctly relates theatomic radius rof the metal to the lenth of an

ede aof the unit cellDa. r R a b. r R a k 2 c< r ? a Z 3 2 #d. Ahis cannot be determined ithout additionalinformation e. none of these

,. Ahe forces holdin the molecules toether in thelattice of a molecular solid area< *an der Raals forces b. ionic bonds c.covalent bonds d. all of these e. none of these

,5. 7olecular crystals typicallya. are soft b. have lo meltin points c. areinsulators d< all of these e. none of these

,. 7ost ionic solids crystalli@e in the YYYYYY systema. hexaonal b. orthorhombic c< cubic

d. tetraonal e.

monoclinic,%. Ahe roc salt structure can be vieed as a YYYYYYY

lattice of anions" ith cations occupyin positionsexactly beteen pairs of anions

a< face-centered cubic b. monoclinic c.trional d. body>centered cubic e. primitive cubic,,. !n the roc salt structure" each ion is surrounded by

YYYYYYYY e8uidistant ions of opposite charea. 1 b. 2 c. d. , e< none of these

,$. ?hich of the folloin cannot possibly crystalli@e inthe roc salt structureDa. V9 b< &a2S c. Lr#e d. 9'! e. 7O

$+. 'o many chloride ions are contained in a unit cellof CsClD


53/56

a. 1S, b. c. j d< e. 2$1. Ahe coordination number of each cesium atom in

CsCl isa. 1 b. 2 c. d< e. 12

$2. ; certain solid is a ood insulator" is brittle" andhas a hih meltin point. Ahe substance readilyconducts electricity hen molten. Ahis substance ismost liely YYYYY in nature.a. molecular b. covalent c< ionic

d. metallic e. it could be more than one ofthese

$3. !n a metallic solid" YYYYYYY are located at the latticepoints.

a. neutral metal atoms b. molecules c< positi*elycharged core ions d. electrons e. atomic clusters$. Ahe metal ith the hihest meltin point is

a. -t b. h c. 9b d. =a e< R$5. ; structure that forms naturally hen identical riid

spheres are placed as close toether as possible iscalled a YYYY arranement.a. primitive b< close-paced c. face>centered d. dense e. nematic

$. ; crystal structure hich yields close pacin foruniform riid spheres is

a. primitive cubic b. tetraonal c. body>centered cubic

d. all of these e< none of these$%. !n the hexaonal close>paced structure" eachatom has a coordination number ofa. 2 b. c. d. , e< 2

$,. !n diamond" each carbon is covalently bonded toYYYYYYYY other carbon atomsa. 2 b. 3 c< # d. e. ,

$$. Ahe most stable form of sulfur at room temperatureis

a. aseous atoms b. lon chains of sulfur atoms c. #tetrahedral d. #2 molecules ith double bonds e< Srings1++. ?hich element in roup V does not form a solid

ith each atom bonded to three othersDa. ;s b. i c< & d. - e. #b

1+1. ?hich of the folloin forms a layeredstructureDa< graphite b. hite tin c. sulfur

d. red phosphorous e.all of these

1+2. ?hich of the folloin forms a solid ith thediamond structureDa. sulfur b. hite tin c. red phosphorous

d. sodium e< gray tin1+3. Ahe crystal defect in hich an atom or ion is

displaced from its reular position in the lattice toan interstitial site is called a(n)a. #chotty defect b< renel defect c. center d. site defect e. berthollide

1+. !rradiation of 9aCl ith ultraviolet liht cancausea. chloride ions to lose electrons to the crystalline

latticeb. formation of an centerc. formation of a nonstoichiometric crystald< all of thesee. none of these

1+5. !n a plastic crystal"a< the molecules tumble before the lattice s

disruptedb. the lattice is disrupted before the molecules

bein to tumblec. the molecules are rod>lie

d. all of thesee. none of these

1+. Ahe rate constant of a reaction depends upona. initial concentration of reactantsb. extent of reactionc< temperatured. time of reaction

1+%. ?hich of the folloin factors does noinGuence the rate of a reactionDa. Concentration of reactantsb. 9ature of reactantsc< Qolecularity of the reactiond. Aemperature

1+,. Ahe mechanism of a reaction can sometimesbe reduced froma. the temperature dependence of the rateb< the rate lawc. the net e8uationd. the activation enery

1+$. Ahe activation enery of a reaction may beloered bya. raisin the temperatureb. loerin the temperaturec. removin the products of the reactiond< adding a catalyst

11+. Ahe e8uilibrium constant in a reversiblechemical reaction at iven temperaturea. depends on the initial concentrations of the

reactantsb. depends on the concentration of one of the

products at e8uilibriumc< does not depend on the initia

concentrationsd. is not characteristic of the reaction

;nser the folloin 8uestions 111>113 iththe help of the hypothetical reaction and itsrate la

3;()J ()J2C()K()J 24()ate of formation of K R N; N2

111. Koublin of the concentration of ; increasesthe rate of reaction by a factor ofa< 2 b. 3 c. d. $

112. Koublin of the concentration of increasesthe rate of the reaction by a factor ofa. 2 b. 3 c< # d. $

113. !f the volume of the container is suddenlyreduced to one>half its oriinal volume the rate ilincrease by a factor ofa. 2 b. c< d. 1

11. Ahe value of " the specic rate constant" maybe increased bya. decreasin the concentration of Kb. increasin the concentration of ;c. increasin the concentration of C

d< increasing the temperature115. ?hat e*ect does an increase in temperature o1+C have on the rate of the reactionDa. 'alved b. 7ultiplied by 1.5c< =oubled d.Aripled

11. ?hich of the folloin is the best explanationfor the e*ect of increase in temperature on therate of the reactionDa< Ct increases the number of particles with

the necessary acti*ation of energyb. !t enables the reactin particles ith the

necessary activation eneryc. !t loers the activation enery for the reaction


54/56

d. !t enables the activated complex to be moreeasily converted to the products

11%. Ahe reactions of hih molecularity are rarebecausea. activation enery of many body collisions is

very hihb< many body collisions ha*e low probabilityc. many body collisions are not favoured

enereticallyd. none of the above statement is true

11,. ;t 25C " the half life for the decomposition of92O5 is 5.% hours" and is dependent of the initialpressure of 92O5 the specic rate constant isa. ln 2 b. (1S5.%)hr>1

c< (ln275

131. ?hen a8ueous 'Cl is electroly@eda< chlorine gas is produced at the anodeb. hydroen as is produced at the anodec. oxyen as is produced at the anoded. oxyen as is produced at the cathode

132. Ahe number of electrons necessary to produce1.++m of Cu from Cu2J at the cathode of anelectrolytic cell isa< reduction e8uationisa. electrons need not be balancedb< oxidation numbers are not assignedc. chares are not balancedd. atoms need not be balanced

13. !n a alvanic cell the cathodea. is alays made of copperb. is alays made of @incc< may be made of an inert metald. alays attracts neative ions in the solution

135. 'ydroen ions are more readily reduced thana. ;J b. CuJJ

c. Cl2 d< .nLL

13. 9ot all alvanic cells containa. a cathode b. an anodec2mole c. 1.++ x 1+>1mole

11. ;s the lead storae battery is chared"a. the amount of sulfuric acid decreases

b. the lead electrode becomes coated ith leadsulfate

c< sulfuric acid is regeneratedd. lead dioxide dissolves

12. !f an a8ueous solution of :! is electroly@ed (ithplatinum electrodes) one ould expect to nda. potassium deposited at the cathodeb. oxyen liberated at the anodec. the solution around the cathode becomin

alalined< the solution around the anode becoming

brown13. ?hen an a8ueous solution of 9aCl is

electroly@ed" a product formed at the cathode is


55/56

a. 9a b. 'J

c< O"- d. Cl21%%.If a;ueous u O% is electroly$ed for one minute "ith a

current of 2.'' ampere, the !olume of o$ygen produced at

89 at the anode is

a. #.1' x 1'4% liter b& /&+/ml

c. 1.1+ x 1'4% liter d. 1.1+ ml

1%.-s a lead storage battery is discharged

a. "ater is used up

b. lead is formed

c. lead sulfate is consumed

d& sulfuric acid is consumed

1%+. If a large ;uantity of cobalt metal "ere dropped

into a solution containing -g6, &e62, u62, the

products of the reaction "ill beS

a. -g, &e and u b. -g, &e66and u6

c. &e66, u and o66d& 1e== ,u >g and ,o==

1%. hich of the follo"ing instruments makes use

of the standard electrode potentials and the !ariation

of electrode potential "ith concentration

a. 9olarimeter b& p? meter

c. /lectrophorous d. /lectrophotometer

1%. 8he series in "hich the electrode potentials of

metals are arranged in an order is kno"n asS

a. electrical conducti!ity series

b. electrode potential series

c& electrochemical series

d. chemical affinity series

1%*. In a salt4bridge @l is used because

a. agar4agar forms a good Nelly "ith itb. @l is an electrolyte

c& 9= and ,l. have the same transference

number

d. @l is present in calomel electrode

1'. &our colorless salt solutions are placed in

separate test4tubes and a strip of copper is dipped in

each.. "hich solution finally turns blue

a. 9b (CO#)2 b. n (CO#)2

c& >g$-3 d. d (CO#)2

11.hen an electric current is passed through a cellcontaining an electrolyte, positi!e ions mo!e to"ards the

cathode and negati!e ions to"ards the anode. hat "ill

happen if the cathode is pulled out of solution

a. 8he positi!e ions "ill start mo!ing to"ards the anode

and negati!e ions "ill stop mo!ing

b. 8he negati!e ions "ill continue to mo!e to"ards the

anode and the positi!e ions "ill stop mo!ing

c. :oth negati!e and positi!e ions mo!e to"ards the

anode

d& $one of these movements will take place

12. hat is the standard cell potential for the cel

n< n62(ID) ll u62(ID)< u (/for n62 l n T

4.+< /for u62 l u T 6'.#%)

a. 4'.'+ 6 '.#% T 4'.%2 J

b& 5#&3' 5 (.#&/) @ =%&%#A

c. '.#% (4'.+) T 6'.%2J

d. '.+ (6'.#%) T 41.1'J

1#. One &araday of current "as passed through theelectrolytic cells placed in series containing

solutions of -g6, Ci62 and r6# respecti!ely. 8he

amount of -g (-t.t. 1'), Ci (-t. t. *) and r

(-t. t. 2) deposited "ill beS

il!er Cickel hromium

a& %#6g 2+&"g %&"g

b. 1'g *g 2.'g

c. 1'g 1'g 1'g

d. 1'g 11.g 1++g

1%. >i!en standard electrode potentials /

&e66 6 2e &e 4'.%%'J

&e666 6 #e &e 4'.'#+J

8he standard electrode potential (/) for &e666 6 e

&e66 is

a. '.%+J

b& 5#&'#'A

c. 6'.%'%J

d. 6'.1J1.8he magnitude of the indi!idual half cell potentials are

gi!en

(i) O26 6 2e o '.2J

(ii) 7g26 6 2e 27g '.J

"hen both the half cells (a) and (b) are connected

"ith 7/, the metallic electrode o is found to be !e

and 7g electrode is found to be 6!e. 8he correct sign for

the electrode potentials "ill beS

a. 6!e for half cell (I)

b& =ve for half cell (ii)

c. !e for half cell (ii)

1+.hen an iron "ire is immersed in an acidic solution of

uo%, the blue color of the solution is lost after some

time. 8his is due to

a& reduction of ,u==

b. oxidation of uO%

c. formation of double complex bet"een iron and

copper sulfate

d. formation of a colorless salt of u66


56/56

1.Dagnesium cannot displace from solution the ions of

a& sodium b. lead

c. copper d. gold

1. 8he mathematical statement of >ibbs phase rule is

a& 1 @ ,.=2 b. T &4962

c. T &4961 d. 9 T 6&62

1*. 8he homogenous physically distinct and

mechanically separable parts of the heterogeneous

system in e;uilibrium are called

a& phases b. components

c. degrees of freedom d. none of the abo!e

1+'. hat is the degree of freedom of a system

consisting of a gaseous mixture of carbon dioxide and

nitrogen

a. ' b. 1

c. 2 d& 3

1+1. 7o" many phases are present in the "ater system

a. ' b. 1

c. 2 d& 3

1+2. 7o" many phases "ill be there in the system made

of "ater and methyl alcohol

a. # b. 1

c& % d. '

1+#. 7o" many components are necessary to define the

follo"ing e;uilibrium aO# aO 6 O2

olid solid gas

a. ' b. 1

c& 2 d. #

1+%. 8he minimum number of phases existing in a system is

a. ' b& %

c. 2 d. #

1+. 8he incongruent melting point is so called

a. peritectic temperature

b. meritectic temperature

c. transition temperature

d. all of the above

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