Sample Question Paper of Class 9th Science (Annual Examination)

Sample Question Paper of Class 9th 

Science (Annual Examination)

ANNUAL EXAMINATION – 2020-21

SUBJECT – SCIENCE

CLASS- IX

Time: 3 hrs.                                                                                          Total Marks: 80

 

General Instructions:

       i.            The question paper comprises four sections A, B, C and D. There are 36 questions

     ii.            in the question paper. All questions are compulsory.

  iii.            SECTION–A - question no. 1 to 20 - all questions and parts thereof are of one mark each. These questions contain multiple choice questions (MCQs), very short answer questions and assertion - reason type questions.  Answers to these should be given in one word or one sentence.

  iv.            SECTION–B - question no. 21 to 26 are short answer type questions, carrying 2 marks each. Answers to these questions should in the range of 30 to 50 words.

     v.            SECTION–C - question no. 27 to 33 are short answer type questions, carrying 3 marks each. Answers to these questions should in the range of 50 to 80 words.

  vi.            SECTION–D – question no. - 34 to 36 are long answer type questions carrying 5 marks each. Answer to these questions should be in the range of 80 to 120 words.

vii.            There is no overall choice. However, internal choices have been provided in some questions. A student has to attempt only one of the alternatives in such questions.

viii.            Wherever necessary, neat and properly labeled diagrams should be drawn.

 

SECTION A

 

1.       Differentiate between distance and displacement.                                         (1)

2.       Which force accelerates a body in free fall?                                                  (1)

3.       Why is Newton's law of gravitation called the universal law?                       (1)

OR

          Why does a boat tend to leave the shore, when passengers are alighting from it?   

4.       Write the mathematical formula for Newton's second law of motion.           (1)

5.       The distance between two objects is decreased. Will the gravitational force between them   Increase or decrease?                                                            (1)

6.       What is the SI unit of acceleration due to gravity (g)?                                   (1)

OR

What is the SI unit of Gravitational Constant?

7.       Answer the following questions.                                                        (4×1=4)

(a)  What is meant by momentum of a body?

(b) How can it be measured?

(c)  Write its SI units.

(d) Explain how does Newton's first law give the qualitative definition of force?

 

8.       Read the following and answer any four questions from 8 (i) to 8 (v).         (4×1=4)

Energy is conserved. What does this really mean, and why is it true? Water in a reservoir is more or less conserved. So the amount of water can always be calculated from the amount that was there some time ago, plus the amount that has come in, minus the amount that has gone out (you may have to take account of evaporation as well as water drawn off). Energy is similar. If you take any volume of space, then the total energy inside that volume at a given time is always the amount that was there earlier, plus the total amount that has come in through the surface, minus the total amount that has gone out through the surface. The swinging pendulum can either possess the kinetic energy or potential energy. When the bob is at position B it possesses only the potential energy and not the kinetic energy. When it moves towards the point A its potential energy goes on decreasing. And kinetic energy goes on increasing. When it reaches at point A it possesses only kinetic energy. When it again tends to move towards the point C kinetic energy starts getting converted to potential energy. Thus at extreme positions B and C, the potential energy is maximum. While at mean position kinetic energy is maximum. Thus the total energy at every instant of a time is constant. This proves the law of conservation of energy.

 

 

The law of conservation of energy is a law of science that states that energy cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.

i) The energy stored in wound watch spring is

a) K.E

b) P.E

c) Heat Energy

d) Chemical Energy

ii) If the stone is thrown up vertically and return to the ground, its potential energy is       maximum

a) During the upward journey

b) At the maximum height

c) During the return journey

d) At the bottom

iii) The potential energy of a simple pendulum will be maximum when it is-

a) At the turning point of oscillation

b) At equilibrium

c) In between above two cases

d) Any time

iv) SI unit of energy

a) Joules

b) Newton

c) m/s

d) meter

v) Kinetic energy of the bob of a simple pendulum is maximum

a) at the mean position

b) at the extreme left position

c) at the extreme right position

d) None of these

9.       The nucleons are                                                                                               (1)

a. Protons and electrons

b. Neutrons and electrons

c. Protons and electrons

d. Protons and neutrons                                                                                                 

10.     Name the isotope of hydrogen having two neutrons.                                        (1)

a. Proton    

b. Protium

c. Deuterium

d. Tritium                                                                                                                      

11.     How many neutrons are present in C 14 isotope of carbon                                 (1)

a.      14

b.     12

c.      26

d.     8                                                                                                                          

12.     An isotope which is used as fuel in nuclear reactor.                                           (1)

a.      U - 238

b.     U - 235

c.      Pb-211

d.     Co-60

 

13.     Write one word each for the following statements

a.      Atoms of the same element having similar atomic no and different mass no.

b.     Double charged helium ions having mass of 4U and have considerable amount of energy.

c.      A subatomic particle which has mass of 1U and no charge.

d.     An element having one positive change on it is known as------.                    (4)

14.     Plasma membrane is called a selectively permeable membrane. Justify         (1)

15.     What is the function of sieve tube cells and how are they designed to carry out there function?                                                                                                     (1)

OR

Why is nuclear region in prokaryotes poorly defined?                             

16.     Define tissue.                                                                                                        (1)

OR

Who discovered vaccine for the first time? Name two diseases which can be prevented by using vaccines.    

17.     State the importance of classification.                                                                    (1)

 

For question number 18 and 19, two statements are given- one labeled Assertion (A) and the other labeled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below:

a) Both A and R are true, and R is correct explanation of the assertion.

b) Both A and R are true, but R is not the correct explanation of the assertion.

c) A is true, but R is false.

d) A is false, but R is true.

18.     ASSERTION (A): Viruses lack any membranes                                                    (1)

REASON (R): Viruses do not show characteristics of life until they enter a living body and use its cell machinery to multiply.

OR

ASSERTION (A): Mitochondria are strange organelles

REASON (R): The energy required for various chemical activities needed for life is released by

Mitochondria in the form of ATP (Adenosine triphosphate) molecules.   

 

19.     ASSERTION (A): Salmonella typhi, causes peptic ulcers.                                     (1)

REASON (R): Patients could be cured of peptic ulcer only when the bacteria were killed off from the stomach.                   

 

20.     Read the following and answer any four questions from 20 (i) to 20 (v)          (4)

A group of cells that are similar in structure and/or work together to achieve a particular function forms a tissue. The growth in plants is limited to certain regions, while this is not so in animals. There are some tissues in plants that divide throughout their life. Cell growth in animals is more uniform.

I)       select the correct statement regarding meristematic tissues?

a. They are found at specific locations in the animal body

b. They have cells with thick secondary walls

c. They perform the function of growth and division

d. Both a and c

II)      Match column 1 with column 2 and select the correct option from the given codes.

Column 1                                                                                 Column 2

A. Food storage                                                                      i. Phloem

B. Food conduction                                                                ii. Xylem

C. Mechanical strength                                                           iii. Parenchyma

D. Water conduction                                                               iv. Sclerenchyma

III)     Which of the following statement is correct about the cell shown in the figure?

 

a. Cells of this tissue are highly specialized for being stimulated and then transmitting the stimulus very rapidly

b. It consists of a cell body with a nucleus and cytoplasm, from which long thin hair-like parts arise

c. Each of this tissue has a single long part, called the dendrite, and many short, branched parts called axons.

d. P receives nerve impulse from Q and conveys it to other cells

IV)    The tissue shown here is:

a. Simple squamous epithelial tissue

b. Striated muscle tissue

c. Areolar tissue

d. Ciliated columnar tissue

V)      Which of the following is incorrectly matched?

i. Adipose tissue-                                Fat storage

ii. Stratified epithelium-                     Skin

iii. Areolar tissue -                              Packaging tissue

iv. Squamous epithelium-                   Kidney tubules

v. Cardiac muscle -                             Branched and multinucleate

vi. Striated muscle-                             Unbranched and uninucleate

a. v and vi only

b. ii, iv and vi only

c. iii and iv only

d. iii and v only

SECTION B

 

21.     i) Identify the type of motion in the following graphs                                   (2)

ii) What does the area under a velocity time graph represent?

22.

i)       Define uniform acceleration and write its SI units .                                      (2)

ii)      A bus travels first 20km in one hour,next 20 km in half an hour and next 20 km in 1 hour. Calculate the average speed of the bus .                 (2)

23.     State any two characteristics of a molecule.                                                  (2)

24.     What are ions? Write the symbol of sodium ion and chlorine ion?                        (2)

25.

a.       Write two points of difference between rough endoplasmic reticulum and smooth endoplasmic reticulum.                                                             (2)

           b.      What is membrane biogenesis?

OR

          Draw a diagram of an animal cell and label at least six organelles in it.

 

26.     a) Identify the plant tissue shown below.                                                               (2)

b) What is its function? 

 

 

SECTION C

 

27. At the end of a race, a runner decelerates from a velocity of 9.00 m/s at a rate of 2.00  

a.             m/s².                                                                                                     (3)

a. How far does he travel in the next 5 sec ?

b. What is his final velocity?

b.     How much time will it take to finally stop?                                         

28.     Write the correct symbol and charge of electron, proton and neutron?         (3)

29.     Calculate the formula mass unit of                                                                 (3)

i) NH₃

ii) H₂SO₄

iii) CaCl₂ (atomic mass of N=14, Cl=35.5, S=32, Ca=40, O=16)                                   

30.

(a) Identify the solute and solvent in Tea.                                                     (3)

(b) Name the technique to separate

(i) Engine oil mixed with iron nails

(ii) Mixture of kerosene, petrol and diesel.

(iii) Camphor from salt

 

31.

a. Aquatic plants have the ability to float rather than being submerged in water. How ?                                                                                                       (3)

b. List the different elements of xylem.

c. Why do plants living in dry habitats have thicker epidermis?

OR

a. Why are voluntary muscles called striated muscles?

b. Which type of muscles are found in the iris of eye, ureters and in the bronchi of the lungs

c. In which part of the body cuboidal epithelium is found? What is its function?

32.     In brief states explain what happens when:                                                  (3)

a. Dry apricots are left for some time in pure water and later transferred to sugar solution.

b. Golgi apparatus is removed from cell

c. The plasma membrane of a cell breaks down

33.

a. State two conditions essential for good health.                                         (3)

b. What is the principle of immunization?

 

 

SECTION D

34.

i)       Differentiate between uniform and non-uniform motion

ii)      Derive velocity time relation graphically.

iii)     A body starts from rest accelerate to a velocity of 20 m/s in a time of 10 s. Determine the Acceleration of the boy.

OR

i)       Derive an expression for kinetic energy of an object.

ii)      If the velocity of an object is doubled. What will be change in its kinetic energy?                                                                                            (5)

35.     From the symbol 1840Ar, Write down the

(i)      Electrons, protons and neutrons

(ii)     Valence electrons and valency

(iii)    Electronic configuration

(iv)    Atomic number, Mass number and

(v)     Draw the structure of Argon.                                                              (5)

 

36.     State four differences between infectious and non infectious diseases giving one example of each?                                                                                        (5)