General, Structure, Mechanistic Aspects and Isomerism

8/12/2019 General, Structure, Mechanistic Aspects and Isomerism

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Q 1. Tetra-valency of carbon can be explained by :

(a) Resonance (b) Hybridization (c) Promotion rle (d) Hnd!s rle

Q ". #ni$e property of carbon atom is :

(a) %ssociation (b) &atenation (c) &on'ation (d) Polarisation

Q . *T+e for valency of carbon atom are directed to,ards t+e corner of a relar tetra+edron ,it+

carbon as its centre*. T+is vie, ,as expressed by :

(a) ele (b) /e 0el and vant Hoff (c) Palin (d) Hcel

Q . /east b.p. is s+o,n by t+e compond :

(a) (b) (c) (d)

Q 2. 3+ic+ of t+e follo,in componds does not ex+ibit eometrical isomerism : (a) l4 "-5ic+loro-"-btene (b) 14 1-5ic+loro-l-btene

(c) l4 l-5ic+loro-"-btene (d) "4 -5ic+loro-"rbtene

Q 6. 7alency state of eac+ carbon atom in 8&9&- is as follo,s:

(a) ls"4 "(sp" )14 "(sp")14 "(sp")14 "pz1 (b) ls"4 "(sp")14 "(sp)14 "py

14 "pz1

(c) ls"4 "(sp)14 "(sp)14 "(sp)1 (d) ls"4 "s14 "spx14 "py

14 "pz1

Q . &Hrepresents t,o +ydrocarbons. T+e pair indicatin t+e nmber of carbon atoms and t+eir +ybrid

state ,old be :

(a) T,o (&) sp"4 one (&) sp and t,o (&) sp4 one (&) sp"

(b) T,o (&) sp"4 one (&) sp and one (&) sp4 t,o (&) sp (c) T,o (&) sp4 one (&) sp and one (&) .sp4 t,o (&) sp

(d) ;one of t+e above

Q


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(c) 0ot+ sp and sp+ybridised carbon atoms.(d) Anly sp"+ybridised carbon atoms.

Q 1. -electron clod of benzene is called :

(a) Boleclar --orbital (b) /ocalized -orbital

(c) 5elocalized -orbital (d) /ateral -orbital

Q 1. 3+ic+ is t+e most nstable free radical:

(a) (&H)& (b) &6H2&H" (c) (&H)"&H (d) &H

Q 12. 3+ic+ is t+e most stable free radical:

(a) Trip+enyl met+yl (b) t-btyl (c) @sopropyl (d) s-btyl

Q 16. 3+ic+ is t+e least stable carbonim ion :

(a) (&6H2)C

(b) &6H2 C

H" (c) (&H) C

H (d) &H"9&H C

H"

Q 1. Ho, many possible free radicals are formed by t+e removal of +ydroen from &H1>:

(a) 1 (b) " (c) (d)

Q 1


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Q ". &onsider t+e follo,in se$ence of steps :

(i) %0 (ii) 0 &5 F (iii) F %"I

Prodct of t+e reaction isJare :

(a) 04 54 F and I (b) 5 and I (c) 54 F and I (d) I

Q ". &EH bond enery in et+ane4 et+ene and et+yne is :

(a) F$al in all t+e t+ree componds (b) Baximm in et+ane

(c) Baximm in et+ane (d) Baximm in et+yne

Q 1. (&E&)

-bond in &H"9&9&H"is formed by t+e overlappin of: (a) sp"s (b) sp-sp1 (c) sp"sp" (d) sP"-p

Q ". %ll t+e &E& bond lent+ in benzene are e$al becase.....exists in t+e molecle :

(a) Talomerism (b) Resonance

(c) sp1+ybridisation (d) /ocalisation of electron clod

Q . %rrane t+e follo,in in t+e decreasin order of t+eir solbility in a polar solvent:

(%) @sobtane (0) n-btyl bromide (&) t-btyl bromide

(a) & K 0 K % (b) % K 0 K & (c) 0 K & K % (d) 0 K% K &

Q . #nder normal condition......,ill ndero addition reaction and.........,ill ndero sbstittion reaction (%) &"H2&l (0) &"H (&) &H&HA

(a) %4 (0 and &) (b) (0 and &)4 % (c) 04 (% and &) (d) (% and &)4 0

Q 2. T+e compond ,+ic+ is not isomeric ,it+ diet+yl et+er isC

(a) n-Propyl met+yl et+er (b) 0tan-1-ol

(c) "-Bet+yl propan-"-ol (d) 0tanone

Q 6. 5ipole moment of vinyl c+loride and met+yl c+loride follo,s t+e order:

vinyl c+loride L met+yl c+loride T+is is de to :

(a) @ndctive effect (b) Flectromerie effect (c) Resonance effect (d) Hypercon'ative effect

Q . M carbon atom is available in :

(a) "-Bet+yl-1-c+loropropane (b) "4 "-5imet+yl-1 -c+loropropane

(c) Trimet+yl c+loromet+ane (d) "-&+lorobtane

Q . Dtability of tertiary btylcarbonim ion can be explained by:

(a) 0ot+ indctive and resonance (b) 0ot+ indctive and no bond resonance


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(c) 0ot+ electromerie and resonance effect (d) 0ot+ indctomeric and electromerie effect

Q 1. T+e terminal carbon in "-btyne is in .... +ybridisation state and its p-c+aracter is .... percent:

(a) sp4 2 (b) sp4 2> (c) sp4 "2 (d) sp"4 2>

Q ". Grop exertin l effect is :

(a) ;A" (b) &@ (c) ;H" (d) &H

Q . Baximm @ effect is exterted by t+e rop :

(a) ;A" (b) &l (c) A&H (d) &6H2

Q . /east 1 effect is exerted by t+e rop :

(a) &H (b) &"H2 (c) (&H)"&H (d) n-&H

Q 2. Nero indctive effect is exerted by t+e rop :

(a) ;A" (b) A&H (c) H (d) &H

Q 6. &H;H"is more basic t+an ammonia becase :

(a) Bet+yl rop +as an electron ,it+dra,in tendency (b) Bet+yl rop +as an electron realisin tendency

(c) Bet+yl rop exerts indctomeric effect

(d) Bet+yl rop +as a tendency to c+ane t+e eometry of t+e molecle.

Q . %niline is less basic t+an et+ylamine4 becase :

(a) P+enyl rop is directly attac+ed to nitroen of ;H" rop

(b) Flectron pair interaction ,it+ -orbital of benzene rin.

(c) Hcel rle is follo,ed by aniline

(d) ;one of t+e above is correct

Q . Reaction in ,+ic+ free radicals are not formed :

(a) T+ermal decomposition of (&"H2)Pb (b) 5issociation of &l"in presence of li+t

(c) Flectrolysis of a$eos soltion of &H&AA;a

(d) Hetereolysis of (&H)&&l

Q 21. &"H2 S

is called :

(a) Bercaptal ion (b) Bercaptan ion (b) Bercaptolion (d) Bercaptide ion

Q 2". Rearranement of t+e follo,in carbocation lead to t+e species:


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(%) (0)

(a) (%) ;o c+ane (0) (b) (%) (0)

(c) (%) ;A c+ane (0) (d) ;one of t+ese

Q 2. Heterolytic prodcts of isobtane are :

(a) Bct+ylim and Propylim (b) Bet+yl anion and isopropylim

(c) Propyl anion and mcl+yl anion (d) @sopropyl cation and mct+ylim

Q 2. Delect t+e correct classified rop of /e,is acid and /e,is base in t+e set Nn&l"4 Ie&l4 ;H4 N

A":/e,is acid /e,is base

(a) Nn&l"4N

A" Ie&l9 ;H

(b) Nn&l"4;H N

A"4 Ie&l

(c) Ie&l4 Nn&l"4 N

A" ;H

(d) Ie&l4 ;H ;O

"4 Nn&l"

Q 22. &orrect order of 1 effect of t+e sbstitent is :

(a) &AA

-

K A

-

K &R (b) A

-

K &AA

-

K &R (c) A

-L &AA-L &R (d) &AA-L A-L &R

Q 26. T+e correct order of basic c+aracter for:

(%) &H;H"4 (0) (&H)";H4 (&) (&H); is :

(a) % 9 0 9 & (b) & L 0 K% (c) % K 0 K & (d) & 9 0 K%

Q 2. 3+ic+ is a tre statement abot met+yl acetylide and mcrcaptide ion:

(a) 0ot+ are ncleop+ile

(b) Bet+yl acetylide is an electrop+ile and mercaptidc is an ncleop+lie

(c) 0ot+ are electrop+ile

(d) Bet+yl acetylide is ncleop+ile and mercaptidc is an electrop+ile.

Q 2. 3+ic+ is t+e least acidic:

(a) &6H2AH (b) &H;A" (c) &H&l (d) &H

2


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Q 61. %mmonical & (1) c+loride ives red precipitate ,it+ :

(a) &"H2E&9&EH (b) &HE&9&E&H (c) &H"9&HE&H (d) &H"9&H"

Q 6". 3+ic+ of t+e follo,in acids does not form an+ydride:

(a) (b) &H&AAH (c) (d) H&AAH

Q 6. @n t+e sbstittion reaction of met+yl bromide ,+ic+ one is more effective nelop+ile:

(a) &"H2

A (b)

A H (c) &H&A

A (d) &6H2

A

Q 6. T+e eometry of )CH free radical is planar4 t+e npaired electron ,old be in t+e :

(a) "s orbital (b) "pxorbital (c) "pyorbital (d) "pzorbital

Q 62. R&H"&l H

A R&H"AH

& l

reaction follo,s D;" mec+anism. 3+ic+ of t+e follo,in species ,ill be formed as an intermediate :

(a) &arbonim ion (b) &arbanion

(c) pentavalent carbon in t+e transition state (d) &arbene

Q 66. 3+ic+ one is an electrop+ile :

(a) Dlp+r trioxide (b) Bet+ylene (c) Dlp+onim ion (d) %ll t+e above

Q 6. 3+ic+ one is not an electrop+ile :

(a) ;itronim ion (b) 0romonim ion (c) 0islp+ide ion (d) Dlp+onim ion

Q 6


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(c) )CH &H &H- &H (d) &l &l &l"

Q 2. ;mber of anles of 1>="

(a) %ll carbons in t+e sp"+ybridised state (b) @t is a carbene species

(c) @t s+o,s paramanetic be+avior (d) T+e species bears a positive c+are

Q . Fvalate t+e deree of nsatration in &1"H1>:

(a) 1M (b) " (c)


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Q . (&"H2)" A0Iis t+e addct formed in t+e reaction of (&"H2)"A and 0I. 3+at is tre for t+e

process :

(a) (&"H2)"A ,ors as /e,is baseC (b) (&"H2)"A ,ors as /e,is acid

(c) (&"H2)"A ,ors as an electrop+ile(d) (&"H2)"A does not ,or as a nclep+ile

Q =1. ;cleop+ilic part of t+e reaent attacs t+e sbstrate4 &H&H"&A&Hon t+e :

(a) &H"rop of t+e etone (b) &arbon atom of t+e carbonyl rop

(c) Bet+yl rop (d) Axyen atom of carbonyl rop

Q =". 3+ic+ is t+e sefl reaent for electrop+ilic aromatic sbstittion reaction :

(a) Hydride ion (b) 3ater (c) ;itratin mixtre (d) 0islp+ite ion

Q =. %loxide ion is a stron...............t+an t+e correspondin alco+ol:

(a) /e,is acid (b) ;cleop+ile (c) Fiectrop+ile (d) 0ronstedacid

Q =. /east boilin point ,old be of t+e compond :(a) &H;H" (b) &H&A&H (c) &H&1 (d) &HI

Q =2. Flectron deficient species formed in t+e Reimer-Tiemann reaction is :

(a) :&&1" (b)P

& @ (c)P

& &l (d)P

H

Q =6. 3+ic+ compond is more sensitive to ndero D;1 reaction :

(a) "-0romobtane (b) "-0romo-"-met+ylpropane

(c) "-Bet+yl-l-bromopropane (d) 0romoet+ane

Q =. @ntermediate species formed in t+e alylation of benzine by Iriedel &rafts reaction is :

(a) (b) (c) (d)

Q =


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Q ==. Delect t+e pair of c+ared electrop+ile :

(a) Dlp+onim and nitryl cation (b) 0oron trifloride and slp+r tioxidc

(c) Dlp+r trioxide and nitrosonim (d) ;itronim and alminim c+loride

Q 1>>. T+ird member of t+e +omoloes series of met+yl elon ,old be:

(a) (b)

(c) (d)

Q 1>1. 0asic c+aracter of acetylide and et+yde ion s+o,s t+e order:

(a) &H 9

& K

& "H2 (b) &H9

& 9

& "H2 (c)

& "H2K &H9

& (d) ;one of t+e above

Q 1>". ;mber of 1and M carbon atoms in neo-+exane are :

(a) 4 1 (b) 4 > (c) 4 " (d) 4 1

Q 1>. !N! isomer is :

(a) (b) (c) (d)

Q 1>. 3+ic+ one of t+e follo,in is not t+e isomer of diet+yl et+er:

(a) n-Propylmet+yl et+er (b) 0tan-1-ol

(c) "-Bet+ylpropan-"-ol (d) 0tanone

Q 1>2. 3+ic+ one of t+e follo,in molecle does not ex+ibit metamerism :

(a) &H1>A (Ft+er) (b) &H11; (%mine) (c) &2H1>A (etone) (d) &H6. 3+ic+ one of t+e follo,in pair represents fnctional rop isomerism :

(a) &HA&H4 &H"&H"AH (b) &H&AAH4H&AA&"H2(c) &H&HA4 &HA&H (d) &H&HA4 &H&A&H

Q 1>. T+e t,o strctres are :

(a) Fnantiomers (b) diastereomers (c) @dentical (d) ;one

Q 1>=. Propionic acid +as E&AAH as t+e fnctional rop4 its isomer ,it+ &AAR fnctional rop ,old

be :

(a) Ft+yl et+anoate (b) Ft+yl met+anoate (c) Ft+yl lycolate (d) Ft+yl pyrvate

Q 11>. 3+ic+ one is t+e pair of c+ain isomers :

=


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(a) &HE&H9&HE&H4 &H"9&HE&H"E&H (b) &H"9 &9 &H"4 &H9&E&H

(c)


Q 111. T+e t,o acids ex+ibit:

(a) Position isomerism (b) Betamerism (c) Tatomerism (d) &+aine isomerrs

Q 11". Delect t+e correct statement:

(a) 7inyl alco+ol and acetalde+yde are not tatomers

(b) Pentanal and "-pentanone are metamers

(c) %cetone and l-propen-"-ol are not tatomers

(d) "-met+ytpropene and isobtylene are i+e same componds

Q 11. &E& bond lent+ ,old be minimm in :

(a) (b) (c) (d) 9&&9

Q 11. %cetonitrile and acetoisonitrile are t+e...........isomers

(a) Position (b) Geomelrical (c) Aptical (d) Inctional

Q 112. Dtrctral formla and t+e correct name of t+e fnctional rop isomer of "-propanol are :

(a) &H&H"A&Hel+oxymet+anc (b) &H&H"A&Hmet+oxyet+ane

(c) &H&H"&H"A&Hl-propanol (d) &H&H"&H"A&Hn-propylmet+yl et+er

Q 116. 3+ic+ one of t+e follo,in isomerism cannot be classified as strctral isomerism :

(a) &+ain (b) Geometrical (c) Position (d) Inctional rop

Q 11. @n RD@-trip+enyl slp+onim iodide4 slp+r is :

(a) Tricovalent-monoelectrovalent (b) 5ivalent

(c) #nicovalent (d) Tetra-covalent

Q 11. 3+ic+ one of t+e follo,in is a pair of isomers :

(a) Bet+ylmet+ane and et+ane (b) 5imet+ylmet+ane and propane

(c) @sopentane and "4 "-dimet+yl propane (d) Ft+yl alco+ol and dimet+yl et+er

Q 1"1. and represent an example of: (a) Position isomer (b) Geomelrical isomer (c) Betamer (d) Inctional isomer

1>


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Q 1"". 3+ic+ of t+e follo,in componds does not ex+ibit tato-merism :

(a) &H&A&H (b) &H"9&HAH (c) &H&A&H"&AA&"H2(d) &H"9&HE&H"AH

Q 1". Possible isomers for t+e compond &H=0r ,old be :

(a) " (b) (c) (d) 1

Q 1". 3+ic+ one of t+e follo,in radicals do not represent &H2E radical:

(a) &H"9&HE&H"E (b) &HE&H9&HE (c) (d) E&H"EA&H

Q 1"2. Ft+yl prpanoate4 n-propyl et+anoate and isopropyl et+anoate are :

(a) Betamers (b) Tatomers (c) Dtereoisomers (d) Position isomers

Q 1"6. Reardin stability of R&AAH and R&A

& rop ,e can say :

(a) R&AAH is more stable t+an R&A

&

(b) &+are separation taes place in t+e cannonical forms of R&A

&

(c) Dtabilization enery of R&A

&is reater t+an t+at of R&AAH

(d) Resonatin forms of R&AAH and R&A

& are e$ivalent.

Q 1". &arbon tetrac+loride s+o,s a zero dipole moment becase :

(a) @t +as a planar strctre

(b) @t +as a tetra+edral strctre

(c) &arbon and c+lorine are of e$al size

(d) T+e electron affinity of carbon and c+lorine is not very different

Q 1"


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Q 12. Ft+anoyl c+loride is not an isomer of:

(a) &+loroet+ylene oxide (b) "-&+loroet+anal

(c) "-&+loroet+en-l-ol (d) Ft+ylene c+loro+ydrin

Q 16. #nstable species containin electron deficient nitroen atom is :

(a) %cyl nitrene (b) %cetonitrile (c) %cetoisonitrile (d) Iormonitrile

Q 1. Delect t+e polyfnctional acyclic compond :

(a) &H&H"&AAH (b) &H&A&H"&; (c) HA&6H&H"AH (d) &6H(AH)&AAH

Q 1


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Q 1. Dpecies sc+ as &H : (a) &annot exist at all (b) D+ort lived and dimerise

(c) 5issociate to ive met+ylim (d) D+o,s diamanetism

Q 121. @n case of +omoloes series4 ,+ic+ one of t+e follo,in statement is false:

(a) Decond and fort+ member of t+e series differ by &"H (b) Fac+ series can be represented by a eneral formla

(c) Fac+ member of a series s+o,s same p+ysical properties bt differ in c+emical properties.

(d) T,o +omoloes series do not +ave common fnctional rops.

Q 12". &+oose t+e ,ron statement reardin electrop+ile :

(a) @t is an electron deficient species (b) @t is an acidic reaent

(c) @t is an electron pair acceptor (d) @t is a basic reaent

Q 12. &+oose t+e ,ron statement:

(a) &arbocation cannot be a ncleop+ile (b) ;cleop+ile can also be /e,is base

(c) ;cleop+ile cannot be an nc+ared species (d) %loxide and +ydride ions are neleop+ilies

Q 12. 3+ic+ carbanion is most stable O

(a) (b) (c)

&H"E&H(&H)" (d) ;one

Q 122. Pic ot t+e stron base from eac+ pair : (%) ;Hand PH (0) ;H9&-and &H

- (&) ;H"- and AH-

(a) PH4 H&9&-4 AH- (b) ;H4 &H-4 ;H"- (c) PH4 &H-4 ;H"

- (d) PH4 HG9&-4 AH-

Q 126. @somerism exits bet,een et+ylamine and dimet+ylamine :

(a) &+ain (b) Position (c) Inctional (d) Tatomerism

Q 12. Bet+yl propyl acetylene and diet+yl acetylene ex+ibit t+e isomertsm :

(a) Betamerism (b) Position (c) Inctional (d) &+ain

Q 12. T,in +alide ,it+ no primary carbon atom is :

(a) Ft+ylidene c+loride (b) Ft+ylene c+loride (c) 5ic+loromet+ane (d) 14 1-5ic+lorobtanc

Q 161. T+ree carbon containin alco+ol ,ill s+o, t+e type of iso-merism :

(a) Position and fnctional (b) &+ain and position

(c) Position and tatomerism (d) &+ain and optical

Q 16". @f met+yl rop of "-btanone is replaced by +ydroen atom t+e resltin compond is a fnctional

isomer of:

1


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(a) "-Propanol (b) Propanone (c) Propanal (d) Proparyl alco+ol

Q 16. T+ree secondary amines can be formlated by t+e compond of moleclar formla:

(a) &H; (b) &H2; (c) &H=; (d) &H11;

Q 16. T,o carbon-oxyen bond lent+s ,old be same in t+e species:

(a) %cetate ion (b) Ft+yl acetate (c) Bet+yl acetate (d) %cetic acid

Q 162. Dtronest base ,old be :

(a) (&H)";H (b) (&6H2)";H (c) &6H2;H" (d) (&"H2)";H

Q 166. @f is t+e rate constant4 t+e rate e$ation for t+e alaline +ydrolysis of 1+alide ,old be :

(a) Halidel (b) %lali (c) Halide %lali (d) Halide"

Q 16. 3+ic+ one of t+e follo,in does not represent t+e first member of t+eir +omoloes series :

(a) &HAH (b) &H&l (c) &H&; (d) &H;H"

Q 16


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(c) &H;H"and (&H)";H (d) %ll t+e above

Q 1


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(a) &HE&AAH (b) &6H2&AAH (c) &6H2-AH (d)

Q 1=>. ;mber of c+iral carbon atom present in t+e compond:

(a) Nero (b) Ane (c) T,o (d) T+ree

Q 1=1. (%) (0) (&) &H"9&H&H"AH

(5) (F)

&+oose t+e rop s+o,in position isomerism :

(a) 0 and F (b) 0 and & (c) % and 5 (d) %4 04 & and F

Q 1=". Binimm electroneativity ,ill be s+o,n by t+e carbon atom :

(a) 2t+ (b) rd (c) 1st (d) "nd

Q 1=. Binimm nmber of carbon atoms present in t+e t+ree branc+ed alyne are:

(a) (b) = (c) < (d) 6

Q 1=. %cid catalyzed de+ydration ,old be most difficlt for t+e alco+ol:

(a) (b) (c) (d) Dame ease in all

Q 1=2. T+is reaction comes nder condensation :

(a) HE&HAparaformalde+yde (b) &HE&HAparalde+yde

(c) &H&AE&H mesitylene (d) &H"9&H"polyet+ene

Q 1=6. Dtronest acid is :

(a) p-;itrop+enol (b) m-;itrop+eno@ (c) o-;itrop+enol (d) p-&+lorop+enol

Q 1=. Imaric acid and maleic acid are related to eac+ ot+er as : (a) Position isomers (b) Dtereoisomers (c) &+ain isomers (d) Tatomers

Q 1=


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(c) (&H)"&E&H9&H" (d) ;one of t+ose

Q ">>. 3+ic+ electromeric effects ,ron :

(%) (0) (&)

(a) % (b) & (c) 0 (d) %ll are correct

Q ">1. Heterolysis is most difficlt for t+e compond :

@. (&H)&E&l @@. (&H)&EAH @@@. (&H)&EA%c

(a) @ (b) @@@ (c) @@ (d) ;one

Q ">". 14 -0tadiene is t+e resonance +ybrid of:

(a)

& H"E&H9&HE

& H" (b)

& H"E&H9&HE

& H"

(c) 0ot+ t+e above (d) ;one of t+ese

Q ">. &H6. 5ecreasin order of-@ effect of t+e triad ;A"4 ;

H4 &; is:

(a) ;

HK ;A"K - &; (b) ;

HK &; K ;A"

(c) E&; K E;A"K ;

H (d) E;A4 K &; K ;

H

Q ">. /o,est boilin point ,ill be s+o,n by :

(a) (b) (c) (d)

Q ">


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Q "1>. Bost stable carbonim ion ,ill be obtained if t+e follo,in rops are attac+ed to t+e free valenceis

of t+e strctre :

(a) &H4 &H4 &"H2 (b) &H4 &"H24 &"H2 (c) &H4 &"H24 &6H2 (d) &H4 &H4 &H

Q "11. Baximm anlar strain ,ill be s+o,n by :

(a) (b) (c) (d)

Q "1". T+e same percentae of carbon ,ill be observed in ,+ic+ of t+e follo,in pair of componds :

(a) 1-0tyne4 14 "-btadiene (b) 1-0tene4 1-btyne

(c) -0tene4 1-btyne (d) 14 "-0tadiene4 "-btene

Q "1. &H&H"0r "AgNO prodct

T+e prodct of t+e above reaction s+o,s :

(a) &+ain and tatomerism (b) Inctional and tatomerism

(c) Betamerism and position isomerism (d) &+ain and position isomerism

Q "1. &+oose t+e ,ron statement:

(a) An +eterolysis &H-&H"&Hprodces &H &+

H"and &

Has t+e prodct.

(b) @ndctive effect is temporary ,+ile electromeric effect is permanent.

(c) Reaction of &H&9&H and ;a;H"ives met+yl acetylide anion4

(d) &H&H@" Nn on +eatin ives carbene and Nnl".

Q "12. T+e neative part of ,+ic+ of t+e follo,in salt is a stronest base:

(a) ;a&9&H (b) ;a&V9&E&H (c) ;a&H

- (d) ;a&H-9&H"

Q "16. Total nmber of anles present in propane are :(a) (b) < (c) 1" (d) 1only ,+ile @@ possesses 1">M4 1M and 1>=M"

(c) @ and @@ possess for -electrons

(d) @ and @@ are con'ated dienes.

Q "". Ior t+e distinction of cis and trans "-btene4 t+e follo,in property is c+osen :

(a) Aptical (b) 5ipole moment (c) Redced prodct (d) &+lorinated prodct

Q ""2. 3ron stability order is

(a)(b) &HE&H"E

& HE&H9&HE&H K&HE

& HE&H"E&H9&HE&H

(c) H&9

& K&H"9&H

(d) &HE

& HE&A&HK &HE

& HEA&H

Q ""6. Geometrical isomerism is present is :

(a) Pentane (b) 1-0tene (c) "-0tene (d) Propene

Q "". Arder of b.p. of amine4 alco+ol and acid is :

(a) R&H"AH L R&AAH L R&H";H" (b) R&AAH L R&H"AH L R&H";H" (c) R&H";H"L R&H"AH L R&AAH (d) R&AAH L R&H";H"L R&H"AH

Q ""


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(a) & (b) ; (c) 0ot+ on & and ; (d) Resonatin bet,een & and ;

Q "1. Binimm nmber of -+ydroen atoms ,ill be in t+e follo,in carbocation:

(a) @sopropylim (b) Bet+ylim (c) t- 0tylim (d) Ft+ylim

Q "". (&"H2) A

H HD

"A H"DA(&"H2)"A @n t+e above reaction :

(a) HD

"A is 0ronsted acid (b) Protonated et+er is 0ronsted acid

(c) HD

"A is /e,is acid (d) Protonated et+er is /e,is base

Q ". etene &H"9&9A is an important reaent for t+e follo,in :

(a) Bet+ylation (b) %cetylat ion (c) &arbonylation (d) ;one of t+e above

Q ". ;mber of isomers of &H&l (aromatic) are :

(a) " (b) (c) (d) 1

Q "2. &+oose t+e stron base from eac+ of t+e follo,in pair :

(a) A &"H24 A H (b) H&9&-4 &H

- (c) 0r-4 @- (d) &H-4 ;H"-

&ode is : % 0 & 5

(a) 8A& "H24 &H- 0r- &H

-

(b) AH-4 &H-4 @

-4 &H-

(c) AH-4 H&9&-4 @-4 &H-

(d) AH-4 &H-4 @-4 ;H"

-

Q "6. @n ,+ic+ of t+e follo,in reaction rearranement +as taen place :

(a) " " " "H SO

CH CH OH CH CH =

(b) " " " "( ) ( )H SO

CH COH CH C CH =

(c) " " " ( ) H SO

CH CH CH OH CH CH CH CH =


Q ". &lass of compond +avin t+ree it-bond is :

(a) %lene (b) %ladiene (c) aladiyne (d) %lenyne

Q "


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(a) &1E&"ac$ires some doble bond c+aracter

(b) &"E&ac$ires some triple bond c+aracter

(c) &"E&ac$ires more sinle bond c+aracter

(d) @onic c+aracter of &EH bond increases

Q "2. @f &l-is removed from neo-pentyl c+loride t+e species is a:

(a) 1M &arbocation (b) "M &arbocation (c) M &arbocation (d) 1&arbanion

Q "2. Tolene is more reactive t+an benzene to,ards electrop+ilic sbstittion de to :

(a) @ndctive effect only

(b) Hypercon'ative effect only

(c) 0ot+ indctive as ,ell as +ypercon'ative effects

(d) Dtron mesomeric effect

Q "22. 3+ic+ of t+e follo,in ,ill most readily ive rise to free radicals:

(a) @sopropyl benzene (b) Ft+ane (c) 14 "-5ip+enyl et+ane (d) Hexap+enyl et+ane

Q "26. 3+ic+ of t+e follo,in is a rop of only electrop+ilcs :

(%) &;-

4 ;A"

4 :&&l" (0) %l&l4 DA4 :&H" (&) DA4 0I4 HA

(5) &l4 H"A4 ;A

&odes:

(a) %4 0 (b) 04 & (c) &4 5 (d) %4 5

Q "2. 3+ic+ resonatin strctre of vinyl c+loride is least stable:

(a) (b) &

H "&H9

& @ (c)

& H"E&H9

& l (d) %ll +ave e$al stability

Q "2. T+e pair of metamers is :

(a) (b)

(c) 0ot+ t+e above (d) ;one of t+e above

Q "61. % racemic mixtre contains dextrorotatory and laevoratalory isomers in t+e proportion :

(a) " : 1 (b) 1 : 1 (c) 1 : 2 (d) : 1

Q "6". T+e follo,in reaction is an example of :

(a) -Flimination (b) -Flimination (c) Rearranement (d) ;one

Q "6. (%) D;" (0) D;1 (&) F-" (5) F-l

@nvolves +o, many steps :

% 0 & 5(a) t,o one one one

(b) one t,o one t,o

""


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(c) t,o t,o t,o one

(d) one one t,o t,o

Q "6. Batc+ /ist-@ ,it+ /ist-@@ and c+oose t+e correct ans,er form t+e codes iven belo, :

/ist-@ /ist-@@

(%) &arbene (a) Reimer-Tiemann reaction

(0) &arbanion (b) D;1 reaction

(&) &arbonim (c) Hofmann bromamide reaction

(5) ;itrene (d) %ldol condensation

&odes:

% 0 & 5 % 0 & 5

(a) a d b c (b) a b c d

(c) b c d a (d) d a b c

Q "62. @ncreasin order of electroneativity is :

(a) (b) (c) (d) ;one of t+ese

Q "66. is named as:

(a) ("F4 N)-Hepladiene (b) ("N4 F)-Heptadiene

(c) ("F4 F)-Heptadiene (d) ("N4 N)-Heptadiene

Q "6. 3+ic+ one of t+e follo,in be+aves bot+ as a ncleop+ile and as an electrop+ile :

(a) &HE&9; (b) &HEAH (c) &H"9&HE&H (d) &HE;H"

Q "6


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(a) (b) (c) " (d) 2

Q ". 3+ic+ conformation of btane ,ill +ave t+e minimm enery:

(a) Gac+e (b) Dtaered (c) Fclipsed (d) ;one of t+ese

Q "2. ex+ibits :

(a) Tatomerism (b) Aptical isomerism

(c) Geometrical isomerism (d) Geometrical and optical isomerism

Q "6. and ex+ibits :

(a) Betamerism (b) Tatomerism (c) Position isomerism (d) ;one

Q ". Ho, many stereo isomers and optical isomcrs arc possible for tartaric acid respectively O

(a) 4 (b) "4 " (c) "4 (d) 4 "

Q "


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Q "4 " (d) "4 >4 1

Q ". &"H2AH is +avin almost netral c+aracter. @t is c+aned to ,+ic+ of t+e follo,in by addin

sodim metal:

(a) %cidic (b) ;etral (c) Flectrop+ile (d) ;ecleop+ile

Q "=1. 0enzalis:

(a) Bonovalent (b) 0ivalent (c) Trivalent (d) Nerovalent

Q "=". T+e strctres t+at do not actally exist are called :

(a) Tatomers (b) &on formational isomers

(c) &annonical strctres (d) Aptical isomers

Q "=. 5e+ydroenation of et+anol to ive et+anal is:

(a) -elimination (b) 4 -elimination (c) 4 -elimination (d) Reverse of elimination

Q "=. 3+ic+ of t+e follo,in pairs acts as ncleop+ilcs :

(a) &"H2A;a4 Ie&l (b) %l&l4 Nn&l" (c) 0I4&"H2B0r (d) (&H)"&HB0r4 &"H2A;a

Q "=2. %llyl isocyanide +as:

(a) =and bond (b)


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Q "=. Arder of acid strent+ is:

(a) H&IK H&&1 (b) H&&@ K H&I (c) H&I ; H&&l (d) ;one

Q "=1. % carbonim ion is formed ,+en a covalent bond bet,een t,o atoms in an oranic componds

nderoes :

(a) Homolysis (b) Heterolysis (c) &racin (d) Pyrolsis

Q >". @n 4 most electron deficient centre is

(a) b (b) a (c) c (d) d

Q >. XRin c+ain tatomerY of &H&A&H"AH is :

(a) (b) (c) (d) ;one

Q >. Heat of combstion of isomeric alane is iven (calJ mole). 3+ic+ is t+e most stable isomer :

(a) HM 9-1>.2 (b) H9 -1>.>

(c) H9 -1>.> (d) H-1>.6

Q >2. Geometrical and optical isomers of t+e compond respectively are :

(a) 4 (b) "4 " (c) "4 (d) 4 "

Q >6. 3+ic+ of t+e follo,in statement is incorrect:

(a) 5esmotropism is anot+er name of tatomerism.

(b) %llyl carbocation is less stable t+an isopropyl carboca-tion.

(c) -@ effect is ex+ibited by EN

H

(d) T+e compond &H"&l" is polar.

Q >. %ddition of H@ on doble bond of propene yield isopropyl iodide as ma'or prodct. @t is becase

addition proceeds t+ro+ :

(a) Bore stable carbanion (b) Bore stable carbocation

(c) Bore stable free radical (d) Homoloysis

"6


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Q >=. Delect t+e oranic componds alip+atic in natre bt ,+ic+ brn ,it+ smoy flames :

(a) &&l (b) &H&l (c) &6H2&H"AH (d) 0ot+ 1 and "

Q 1>. Aranic compond solble in ,ater contains :

(a) &4 H (b) &4 H4 A (c) &4 D (d) &4 H4 &l

Q 11. Geometrical isomerism is s+o,n by :

(a) %lynes (b) Ditably sbstitted alynes

(c) Ditably sbstitted alenes (d) &omponds of t+e type (l) and (b)

Q 1". Hypercon'ation is nable to explain t+e stability of t+e follo,in compond :

(a) &HEC

HE&H (b) (&H)&

(c) &HE&H9&H" (d)

Q 1. 3+ic+ carbocation is most stable:

(a) (b) (c) (d) ;one

Q 1. Pair of most stable and least stable carbocation is :

(%) &H

C

HA&H (0) &HE

C

HEA&H

(&) (5)

(a) &4 5 (b) %4 & (c) %4 5 (d) 04 &

Q 12. @f t+e rear carbon atom is rotated by an anle of 6>to t+e ri+t t+en t+e conformation

obtained ,old be :

(a) Gac+e (b) Partial eclipsed (c) &ompletely eclipsed (d) %nti or trans

Q 16. 3+ic+ carbanion is t+e most stable :

(a) (b) (c) (d)

Q 1. Baximm &E& bond lent+ ,old be observed in :

(a) &"H" (b) &"H0r" (c) &"H (d) &"H"0r"

Q 1


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(a) Position isomers (b) Inctional isomers(c) &+ain isomers (d) ;one

Q 1=. @n &H"9&HE&H"E&H"E&9&HC &"-&bond is formed by t+e overlappin of........+ybrid orbitals :

(a) sp-sp" (b) spt-sp (c) sp-sp (d) sp"-sp

Q ">. Ho, many eometrical isomers can be ,ritten for t+e compond:

&HE&H9&HE&H9&HE&H9&HE&l

(a) " (b) (c) 6 (d) . 3+ic+ of t+e follo,in statement is correct O (a) Ior enantiomerism presence of c+iral centre is essential.

"


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(b) Inctional isomerism is one form of stereoisomcrism

(c) 5iastereoisomers are al,ays optically active.

(d) &omponds containin one c+iral atom are al,ays optically active

Q 1. Ho, many c+rial centres are t+ere in t+e compond

(a) " (b) (c) (d) 1

Q ". T+e follo,in pair of strctre represents :

and

(a) Fnantiomers (b) &onformers (c) Position isomers (d) Homoloes

Q . %cyclic isomers of t+e moleclar formla &H&l are :

(a) 1> (b) = (c) 1" (d) 1

Q . 3+ic+ of t+e follo,in is a false statement:

(a) 5iet+yl etone and met+yl propyl etones are position isomers.

(b) "-&+loropentane and 1-c+loropentane arc position isomers.

(c) n-0tane and "-met+yl propane are position isomers.

(d) %cetone and propionalde+yde are fnctional isomers.

(e) %cetyl acetone s+o,s tatomcrism.

Q 2. Geometrical isomerism is s+o,n by t+e compond :

(a) &H&H"&H9&H&H (b) &6H2&H9;AH

(c) (d) %ll t+e t+ese

Q 6. Ho, many isomeric etones can be formlated by &6H1"A

(a) 6 (b) " (c) 2 (d)

Answers

1. (c) ". (b) . (b) . (a) 2. (b) 6. (b) . (b)

. (b) 11. (d) 1". (d) 1. (c) 1. (d)

12. (a) 16. (c) 1. (d) 1


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==. (a) 1>> (d) 1>1. (c) 1>". (b) 1>. (c) 1>. (d) 1>2. (d)

1>6. (a) 1>. (a) 1>=. (b) 11>. (c) 111. (a) 11". (d)

11. (d) 11. (d) 112. (b) 116. (b) 11. (a) 111. (c) ">". (c) ">. (b)

">. (b) ">2. (a) ">6. (a) ">. (b) ">. (c)

"11. (c) "1". (a) "1. (b) "1. (b) "12. (c) "16. (d) "1. (c)

"1. (c) "61. (b) "6". (a) "6. (b) "6. (a) "62. (b) "66. (c)

"6. (a) "6. (b) "1. (b) "". (b) " (a)

". (b) "2. (b) "6. (a) ". (d) "

Documents

General, Structure, Mechanistic Aspects and Isomerism