CBSE Class 9 Science Sample Paper 2017 (1)

CBSE Class 9 Science Sample Paper 2017 (1). It’s always recommended to practice as mane sample papers as possible before the examinations. Students can download the sample papers and also question papers of previous years to practice and score better marks in examinations. Refer to other links too for more sample papers.

 

(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) All questions of Section-A, Section-B and Section-C are to be attempted separately.

(iv) Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in one word or in one sentence.

(v) Question numbers 4 and 5 in Section-A are two marks questions. These are to be answered in about 30 words each.

(vi) Question numbers 6 to 16 in Section-A are three marks questions. These are to be answered in about 50 words each.

(vii) Question numbers 17 to 21 in Section-A are five marks questions. These are to be answered in about 70 words each.

(viii) 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.

(ix) 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.

(x) 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.

SECTION-A

1

Define atomic mass of an element. Mention the unit of measuring the atomic mass of an element.

1

2 Mg) Mg2

What is the number of electrons in Mg atom and Mg2 ion ?

1

3

Who proposed the five kingdom classification of living organisms?

1

4

Deifine transverse waves and name the points where pressure or density variation are maximum and minimum respectively during its propagation.

2

5

mv200 J

An object of mass m and velocity v has kinetic energy = 200 J. Find the new kinetic energy if the velocity of the object becomes double.

2

6

State three rules for writing the chemical formulae.

3

7 [Z] [A]

(i) Z17, A35

(ii) Z4, A9

(iii) Z11, A23

Write the symbols for the atoms with the given atomic numbers [Z] and mass number [A].

(i) Z17, A35

(ii) Z4, A9

(iii) Z11, A23

3

8

(a)

(b)

[Na23 u, S32 u, O16 u]

(a) Define one mole. How is it related to Avogadro’s constant ?

(b) Find the number of sodium ions in sodium sulphate.

[Atomic mass of Na23 u, S32 u, O16 u]

3

9

Mention three characteristics of phylum chordata.

10

(a)

(b)

(c)

Answer the following questions in brief with reason :

(a) Do acute and chronic diseases have different effect on our health ?

(b) Why any disease that causes poor functioning of some parts of the body will affect our general health as well ?

(c) Which disease causes more effects on general health - acute or chronic ?

3

11

(a) HIV

(b)

(c)

Name the organs of the body where the following microbes attack :

(a) HIV virus

(b) Malaria causing microbes

(c) Virus causing Japanese encephalities

3

12

(a) 19.51000 kg/m3SIg/cc

(b) 0.25 cm19.5 g/cc

(a) Relative density of gold is 19.5. The density of water is 1000 kg/m3. Find the density of gold in Sl unit and in g/cc.

(b) The radius of solid gold sphere is 0.25 cm. If density of gold is 19.5 g/cc. Calculate its mass.

3

13

Explain the term echo. State two conditions for an echo to be heard.

3

14

(a)

(b)

(a) Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate.

(b) Which has greater effect on the Kinetic Energy of an object : doubling the mass or doubling the velocity ?

15 150 N15 cm2

Define thrust. A force of 150 N acts on a surface of area 15 cm2. Calculate thrust and pressure.

3

16

(a)

(b)

(c)

Tanu was watching a programme based on ships on television. She saw a device attached to a ship through which the men on the ship located the enemy submarines and sent the message to the headquarters.

(a) Name the device fitted in the ship. Write the full form of the device ?

(b) On what principle does the device work ?

(c) What value you inculcate from this ?

3

17

(a)

(b)

(c)

(a) Compare the models of an atom suggested by J.J. Thomson and E. Rutherford.

(b) Why could Rutherford’s model not explain stability of an atom ?

(c) Give two important features of Neil Bohr’s model of an atom.

5

18

(a)

(b)

(c) : ( : : __________ : (

(d)

(e)

In the hierarchy of classification, there are different groups. Out of the groups mentioned below answer the following questions :

Sub –groups : Genus, Order, Division, Class, Family.

(a) Name the group that has maximum number of organisms.

(b) Name the group that has maximum number of common characters.

(c) Division : Plants : : __________ : Animals

(d) Which group form is part of the scientific name ?

(e) Arrange the above sub groups from highest to lowest levels in hierarchy.

5

19

(a) (X)

(b)

(c)

(d)

(a) Identify the organism (X) shown in the picture given below :

(b) To which kingdom does it belong ?

(c) Which disease is caused by this organism ?

(d) Name one more organism of this kingdom and the disease caused by it.

5

20

(a) 1 KWh

(b) ‘h’‘t’

(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.

5

21

(a)

(b)

(i)

(ii)

(iii)

(a) State Archimedes’ principle.

(b) Explain giving reason the following :

(i) It easier to swim in sea water than in river water.

(ii) A nail can be easily fixed on a wall by putting its pointed edge on it.

(iii) It is difficult to cut a fruit with a blunt knife.

/SECTION – B (OTBA)

(* Please ensure that open text of the given theme is supplied with this question paper.) / Handling Drought in our Country

22

What is cloud seeding? What material is used for it?

2

23

Mention the risk assessment steps for drought planning according to Kates and Kaspersons.

3

24

What steps should be taken by the country to fight against drought.

5

Section – C

25

(a) (b)

(c) (d)

The loudness of reflected sound heard is maximum when the inner surface of tubes are :

(a) rough and uneven (b) solid and polished

(c) smooth and polished (d) hollow, smooth and polished

1

26

1N/ m2

(a) 10 Pa (b) 100 Pa

(c) 1 Pa (d) 1.01x 105 Pa

1N/ m2 is equal to :

(a) 10 Pa (b) 100 Pa

(c) 1 Pa (d) 1.01x 105 Pa

1

27

(a)

(b)

(c)

(d)

In an experiment to determine the speed of pulse through a stretched slinky, pulse created and observed to move gets reflected at :

(a) both ends always

(b) one end always

(c) from any part of the slinky

(d) from the middle point of the slinky

28

(a) (b)

(c) (d)

A thick strand of underground hyphae resembling a root is called as :

(a) Rhizoid (b) Rhizophore

(c) Rhizomorph (d) Radicle

1

29

(a)

(b)

(c)

(d)

To verify the law of conservation of mass, when we mix solutions of Barium Chloride and Sodium sulphate, which of the following observations is correct :

(a) No reaction takes place

(b) Colourless solution is obtained

(c) White precipitate is formed

(d) Green precipitate is formed

1

30 10.6g12g4.4g1.8g

(a) 16.4g (b) 0.16g

(c) 24g (d) 8.2g

In a chemical reaction 10.6g of sodium carbonate reacted with 12g of ethanoic acid. The products were 4.4g carbon dioxide, 1.8g of water and sodium ethanoate. The mass of sodium ethanoate formed is :-

(a) 16.4g (b) 0.16g

(c) 24g (d) 8.2g

1

31

(a)

(b)

(c)

(d)

A student was given a plant, to identify it as monocotyledonous or dicotyledonous. The observation on the basis of which he/she identified it as monocot is :

(a) fibrous root and trimerous flower

(b) fibrous root and pentamerous flower

(c) fibrous root and reticulate venation

(d) fibrous root and leaves with petiole

32

(a) (b)

(c) (d)

Ikshita needs to identify monocotyledonous plant on the basis of leaf shape. Identify the correct observation :

(a) Broad leaf (b) Long leaf

(c) Narrow leaf (d) Cut edged leaf

1

33 (a) (b)

(c) (d)

In the life cycle of mosquito which stage metamorphosis into adult ? (a) Adult (b) larva

(c) pupa (d) eggs

1

34 30

To determine the density of a solid of mass 30 gm the solid was fully immersed into water. The level of water in the measuring cylinder before and after immersing of solid is shown in the diagrams. Find the density of solid.

2

35

500 g X YXYXY

A 500 g mass body is immersed in two liquids X and Y in succession. The extent to which the body sinks in liquid Y is less than that in liquid X. From such observation compare the densities of liquids X and Y. Justify your answer.

2

36

Write one main feature each of the phylum Arthropoda and Annelida.

2

 

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