CREST Science Olympiad (CSO) Class 9 Sample Paper

CLASS

9
SAMPLE PAPER

CREST Science Olympiad (CSO)

Syllabus for CSO is available at https://www.crestolympiads.com/cso-syllabus

Pattern And Marking Scheme
Class Topic/Section No. of Questions Marks per Questions Total Marks
Practical Science 25 1 25
1st to 4th Achiever’s Section 10 2 20
Grand Total 35 - 45
Practical Science 40 1 40
5th to 10th Achiever’s Section 10 2 20
Grand Total 50 - 60

1. Sarah is performing an experiment to measure the speed of sound in air at a particular
temperature. She stands 90 m away from a wall and bangs two pieces of iron rods
together. At the instant she hears the echo, she bangs them together again. She does
this activity 36 times. The time taken for 36 bangs is 20 s. Calculate the speed of air:
a) 330 m/s b) 340 m/s
c) 324 m/s d) 333 m/s

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2. Identify the following protozoa and select the correct option that completes the following
sentences:

i. They reproduce asexually by ___P___ and are prey to many organisms, especially
the ___Q___.
ii. During reproduction, the macronucleus splits by a type of ____R____, and the
micronuclei undergo ___S___.
iii. They can reproduce ___T___ times a day.

a) b)

c) d)

3. A gardener holds a hosepipe through which water is gushing out at a rate of 4 kg/s with
speed 2 m/s. The moment the speed of the water is increased to 3 m/s, the gardener
will experience a jerk of how much force and in which direction?
a) 4 N in the backward direction
b) 8 N in forward direction
c) 8 N in backward direction
d) 4 N in forward direction

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4. Carefully look at the following data.

Cities W X Y Z
5 5
Pressure in 1.1 x 10 1.2 x 10 1.01 x 105 1.23 x 105
2
N/m
P. At W, the boiling point of a liquid will be maximum.
Q. At X, the boiling point of a liquid will be greater than at W and smaller than at Z.
R. At Y, the boiling point of a liquid will be least.
S. At Z, the boiling point of a liquid will be lesser than at X.
Which of the above statements is/are correct regarding the boiling point of a liquid?
a) Only P b) Both Q and R
c) Both P and S d) P, R and S

5. Refer to the given figure and select the incorrect statements:

(i) The part labelled ‘P’ is the gel like substance that contains all the organelles. It is
made up of water and salt.
(ii) The part labelled ‘Q’ consists of a system of membrane-bound vesicles (flattened
sacs) arranged approximately parallel to each other in stacks.
(iii) The part labelled ‘R’ are cell structure that makes iron.
(iv) The part labelled ‘S’ protects the cell from external surroundings. It allows the
entry and exit of materials in and out of the cell.

a) Only (i) b) Only (ii)
c) Both (i) and (iv) d) Both (ii) and (iii)

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6. Correct the given statements by replacing the underlined words and select the correct
option:
(i) Kerosene oil can be separated from the olive oil by the method of centrifugation.
(ii) The drugs from the blood are separated by distillation.
(iii) Pyrolysis is the separation of dissolved crystalloids from colloidal macromolecule
ffff by means of a partially permeable membrane.
(iv) Filtration technique is used to separate dirt particles from clothes in a washing
k machine.

a) b)

c) d)

7. Kenny pulled a block of mass 50 kg over a smooth inclined plane through 9 m as shown
in the figure below. The plane makes an angle of 30 o with the base. The force is applied
parallel to the base. Assuming that no energy is lost otherwise, what is the gain in the
potential energy of the block? (g =9.8 m/s 2)

a) 225 J b) 2205 J
c) 2200 J d) 2205 J

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8. Refer to the given group of diseases:
(i) Cholera, tetanus, tuberculosis, typhoid
(ii) Measles, small pox, polio, influenza
(iii) Malaria, kalaazar, sleeping sickness
Select the options that correctly classify these group of diseases:
a) (i)-Bacterial diseases, (ii)-Protozoan diseases, (iii)-Viral diseases
b) (i)- Protozoan diseases, (ii)-Bacterial diseases, (iii)-Viral diseases
c) (i)-Viral diseases, (ii)-Bacterial diseases, (iii)-Protozoan diseases
d) (i)-Bacterial diseases, (ii)-Protozoan diseases, (iii)-Viral diseases

Achiever’s Section
9. Match the column I with the column II:

Column I Column II
1. The number of molecules P. 6.02 x 1022
present in 1 mole of magnesium
oxide
2. The number of iron atoms in a Q. 6.023 x 1023
piece of iron weighing 5.6 g
3. The number of atoms present in R. 1.204 x 1024
60 g of Cl2
4. The number of atoms of Sulphur S. 1.017 x 1024
present in 1 mole of Na2S2O3

a) 1-P, 2-Q, 3-R, 4-S
b) 1-Q, 2-P, 3-S, 4-R
c) 1-P, 2-S, 3-R, 4-Q
d) 1-P, 2-Q, 3-S, 4-R

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10. Consider the three flasks filled with water as shown below.

Which of the following statements is true?
a) Point X has a higher pressure than point Y.
b) Point Z has a higher pressure than point Y.
c) Point Y has the highest pressure as compared to point X and point Z.
d) Point X, point Y and point Z have the same pressure.

Answers

1. (c), 2. (b), 3. (c), 4. (c) 5. (d), 6. (a), 7. (b), 8. (d), 9. (b), 10. (d)

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