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R2L5RH4

II

SUMMATIVE ASSESSMENT – II (2014-15) SCIENCE /

Class – IX / IX

3 90

Time allowed: 3 hours Maximum Marks: 90

(i)

(ii) (iii) (iv) (v) 1 3 (vi) 4 5 30 (vii) 6 16 50 (viii) 17 21 70

(ix) 22 24 22 2 23 3

24 5

(x) 25 33

(xi) 34 36 30

General Instructions : (i) The question paper comprises of three Sections, A, B and C. You are to attempt all the sections. (ii) All questions are compulsory. (iii) There is no choice in any of the questions. (iv) All questions of Section-A, Section-B and Section-C are to be attempted separately. (v) Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in one

word or in one sentence. (vi) Question numbers 4 and 5 in Section-A are two marks questions. These are to be answered in

about 30 words each. (vii) Question numbers 6 to 16 in Section-A are three marks questions. These are to be answered in

about 50 words each. (viii) Question numbers 17 to 21 in Section-A are five marks questions. These are to be answered in

about 70 words each. (ix) Section B has 3 OTBA questions. Question number 22 is two marks, Question number 23 is

three marks and Question number 24 is five marks question. (x) Question numbers 25 to 33 in Section-C are multiple choice questions based on practical skills.

Each question is a one mark question. You are to select one most appropriate response out of the four provided to you.

(xi) Question numbers 34 to 36 in section C are two marks questions based on practical skills. These are to be answered in about 30 words each.

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SECTION-A

1 3 : 8 6 g

As per the law of definite proportions carbon and oxygen combine in a ratio of 3 : 8. Compute the mass of oxygen gas that would be required to react completely with 6 g carbon.

1

2

How much greater is the mass of proton compared to the mass of electron ?

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3

How does the infection spread from an unhealthy person to a healthy person ?

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4 55 m 330

m/s

A person fires a gun standing at a distance of 55 m from a wall. If the speed of sound is 330 m/sec, find the time for an echo to be heard.

2

5 m v 200 J

An object of mass m and velocity v has kinetic energy = 900 J. Find the new kinetic energy if the velocity of the object becomes one third.

2

6

Define atomicity. Give an example each of monoatomic, diatomic, tetraatomic and polyatomic molecules.

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7 K L

Illustrate that Na atom has completely filled K and L shells.

3

8

35

17Cl 75%

35

17Cl 25%

If chlorine atom is available in the form of two isotopes 35

17Cl 75% and

35

17Cl 25% calculate

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the average atomic mass of chlorine atom:

9 (a)

(b)

(c)

(a) What is the scientific name of humans ?

(b) To which class of vertebrates does it belong ?

(c) Mention any two characteristic features of this group.

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10

According to a newspaper report, some areas in Delhi received grey coloured water in their taps. It was reportedly due to mixing of contents at some points due to leakage in sewer and water supply pipes. Which kind of diseases are likely to spread due to such problems and why ? Give two specific names of diseases that can thus be spread.

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11

(a)

(b)

(c)

Associate the following features with groups in which they first appeared. (a) Vascular tissues (b) Notochord (c) Seeds inside fruits

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12 (a) 40 cm 48.4 J

(b)

(a) If the work done by a force in moving an object through a distance of 40 cm is 48.4 J, what is the magnitude of the force ?

(b) The head of a nail becomes warm when it is hammered into a wooden plank. Explain.

3

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13 100 N 25 cm2

25 N

A force of 100 N acts on a surface of area 25 square cm. Calculate thrust and pressure. Calculate the changed pressure if the force now is reduced to 25 N.

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14

Explain with the help of a bell jar experiment that sound cannot travel in vacuum.

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15 (a) 0.21 cm 7.80 g/cc

(b) 0.18 cm 2.7 g/cc

(a) Radius of an iron sphere is 0.21 cm. If density of iron is 7.80 g/cc. Calculate its mass. (b) Edge of a aluminium cube is 0.18 cm. If density of aluminium is 2.70 g/cc., calculate its

mass.

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16

(a)

(b)

Rahul visited a historical palace with his friend. His friend went to third floor of the palace through staircase and Rahul went to the same floor through lift. On reaching the third floor Rahul had an argument with his friend that they both have done the same amount of work. There they stopped some children from writing their names on the walls. (a) What do you think, is Rahul right in his statement ? Give a suitable reason. (b) Mention values shown by Rahul and his friend ?

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17

(a) 0.5

(b) 0.5

(c) 3.011 23x10

(d) 6.022 23x10

Calculate the mass in each of the following parts : (a) 0.5 mole of hydrogen gas (b) 0.5 mole of hydrogen atoms

(c) 3.011 23x10 number of hydrogen atoms

(d) 6.022 23x10 number of hydrogen molecules

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18

(a) (b)

(c) (d)

(e) (f)

(g) (h)

(i) (j)

Assign appropriate class/phylum/division to the following : (a) Salamander (b) Flying lizard (c) Ostrich (d) Bat (e) Herdmania (f) Wuchereria (g) Ulva (h) Marchentia (i) Marselia (j) Ipomea

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19

(a) (b) SARS

(c) (d)

(e) AIDS (f)

(g) (h)

(i) (j)

Associate the following diseases/infections with their causative agents : (a) Sleeping sickness (b) SARS (c) Kala-azar (d) Acne (e) AIDS (f) Dengue fever (g) Malaria (h) Brain fever (i) Chicken-pox (j) Polio

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20

‘m’ 15 cm2 1000 ‘m’

10 cm2

Define buoyant force and buoyancy.

A pressure of 1000 Pa. acts on a surface of area 15 cm2 by a block of mass ‘m’. Calculate ‘m’ ? Calculate the new pressure exerted by the same block if the area of contact with the surface

becomes 10 cm2.

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21 (a) 1 KWh

(b) ‘h’ ‘t’

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(c) 1600 W 45

(a) Define 1 KWh. (b) A crane is lifting a body to a height ‘h’ in time ‘t’. Find the relation between the power

of crane to the speed at which it is lifting the object. (c) If an electric iron of 1600 W is used for 45 minutes everyday, find the electric energy

consumed in the month of March.

/SECTION – B (OTBA)

(* Please ensure that open text of the given theme is supplied with this question paper.)

Theme : Understanding the Environment of Mars

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(i) MCC (ii) TIS (iii) MENCA (iv) LAP Write the full form of the following acronyms. (i) MCC (ii) TIS (iii) MENCA (iv) LAP

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23

It is found that seasons in Southern hemisphere are more extreme as compared to the seasons in Northern hemisphere. What can be the reason for this ?

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24

Explain the conversion of carbonates to carbon dioxide on earth.

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Section – C

25

(a)

(b)

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(c)

(d)

Metallic tubes are used in the experiment for verification of laws of reflection of sound waves. These tubes are highly polished because they make the sound waves to : (a) have multiple reflections and prevent spreading of sound (b) concentrate into powerful beam (c) move in straight lines (d) none of these

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P1 P2 P1 P2

(a) P1>P2 (b) P1<P2

(c) P1=P2 (d)

An activity, has been performed by a student, for comparing the pressure exerted by a solid cuboid on the loose sand. Now the student observes and compares the depression caused by the same solid cuboid on wheat flour when placed in same position. If P1 and P2, be the pressure exerted by the solid cuboid on sand as well as wheat flour then

the correct relation between P1 and P2 observed by him/her is : (a) P1>P2 (b) P1<P2

(c) P1=P2 (d) data is insufficient

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(i)

(ii)

(iii)

(iv)

/

(a) (iii) (iv) (b) (i) (ii)

(c) (iv) (d) (i)

Students in a class were asked to produce transverse waves. They will do so by : (i) dropping a pebble in calm water. (ii) moving stretched slinky at right angle to the length of slinky. (iii) compressing the free end of the slinky.

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(iv) striking the tuning fork with a hard rubber pad. The correct method/methods are : (a) (iii) and (iv) (b) (i) and (ii) (c) only (iv) (d) only (i)

28

(a) (b)

(c) (d)

In pinus leaves are (a) Needle like (b) Scale like (c) Flat (d) Broad shaped

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29 /

(a)

(b)

(c)

(d)

On complete combustion of a hydrocarbon in sufficient oxygen, carbon dioxide and water are produced. Then according to the law of conservation of mass : (a) Mass of hydrocarbonMass of Carbon dioxidemass of water (b) Mass of hydrocarbon Mass of Carbon dioxide mass of oxygen + mass of water (c) Mass of hydrocarbon + Mass of oxygen = Mass of carbon dioxide + mass of water (d) Mass of oxygen + mass of carbon dioxide = Mass of hydro carbon + mass of water

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30

(a)

(b)

(c)

(d)

Sam carried a reaction between copper sulphate solution and sodium carbonate solution in a closed container and recorded the following observations. which of the following observations is incorrect ? (a) Law of conservation of mass is obeyed in the reaction (b) Blue precipitate of copper carbonate is formed (c) Blue precipitate of sodium sulphate is formed (d) Vigorous reaction takes place

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31

(a)

(b)

(c)

(d)

Identify the figure drawn below and write the cotegory to which it belongs :

(a) tap root; monocotyledonous (b) tap root; dicotyledonous (c) fibrous roots, monocotyledonous (d) fibrous roots, dicotyledonous

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32 A, B, C D

(A)

(B)

(C)

(D)

(a) A (b) B (c) C (d) D Four students A, B, C and D studied the types of seed and flower of peas plant and recorded the following observations : (A) Monocotyledonous seed and pentamerous flower. (B) Monocotyledonous seed and trimenus flower. (C) Dicotyledonous seed and pentamerous flower. (D) Dicotyledonous seed and trimenus flower. The student who has recorded correct observations is : (a) A (b) B (c) C (d) D

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33

(a) (b)

(c) (d)

In the life cycle of mosquito moulting takes place in : (a) adult stage (b) egg stage (c) pupa stage (d) larva stage

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34 19.6 N

A spring balance calibrated in Newton reads 19.6 N. Calculate its mass in grams.

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35 25 mL 15

An object of volume 25 mL suffers a loss in weight of 15 g wt. when immersed fully in a solution. Find the density of the solution.

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36

Identify the given organism in the picture given below and write its one specific feature and one adaptive feature

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