CREST Olympiads - CSO PDF Sample Papers for Class 7

Class 7 sample paper & practice questions for CREST Science Olympiad (CSO) level 1 are given below. Syllabus for level 1 is also mentioned for these exams. You can refer these sample paper & quiz for preparing for the CSO exam.


Sample Questions from Olympiad Success:

Q.1 Q.2 Q.3 Q.4 Q.5 Q.6 Q.7 Q.8 Q.9 Q.10

Q.1

Which of these statements is NOT true about white blood cells?

a)

They are white in colour and smaller than red blood cells.

b)

They do not have a definite shape.

c)

They protect us from disease-causing germs by producing antibodies.

d)

They can engulf germs that enter our bloodstream.

Q.2

Arrange the words given below in a meaningful sequence.

1. Poverty           2. Population              3. Death           4. Unemployment          5. Disease

a)

1 2 3 4 5

b)

2 1 3 4 5

c)

5 3 4 2 1

d)

24153

Q.3

While cooking, closing the cooking pan with a lid allows the food to cook faster. Which of the following statements explains this correctly?

a)

The lid reduces the loss of heat through convection to the surroundings

b)

The lid reduces the loss of heat through radiation to the surroundings.

c)

The lid reduces the loss of heat through conduction to the surroundings.

d)

The lid prevents a convection current from being set up.

Q.4

By which mode of transmission of heat does air get heated up?

a)

Conduction

b)

Convection

c)

Radiation

d)

Diffusion

Q.5

An electromagnet is one which behaves as a magnet when current is _______________.

a)

stopped from flowing through it

b)

allowed to flow through

c)

not allowed to flow through

d)

none of these

Q.6

(2,3), (3,5), (5,7), (7,11), (11,13), (?)

a)

(13,15)

b)

(15,16)

c)

(13,17)

d)

(13,19)

Q.7

Which of the following substance break down when we inhale oxygen during respiration?

a)

Glucose

b)

Protein

c)

Fatty acid

d)

Hemoglobin

Q.8

Find out the two signs to be interchanged for making following equation correct: 6 + 4 x 5 - 8/ 4 = -12

a)

- & +

b)

- & /

c)

+ & /

d)

x & /

Q.9

Choose the correct option and complete the following sentence:

The wire which melts and breaks the circuit when a large current is allowed to flow through it is called _______.

a)

fuse wire

b)

electric wire

c)

filament

d)

connecting wire

Q.10

In summers, if milk is not refrigerated, it becomes sour. Which of the following is added by milkmen to fresh milk to prevent the milk from spoiling?     (NSO, 2011)

a)

Caustic soda 

b)

Potash alum

c)

Baking soda

d)

Lime water

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Answers to Sample Questions from Olympiad Success:

Q.1aQ.2dQ.3aQ.4bQ.5bQ.6cQ.7aQ.8aQ.9aQ.10c

Answers to Sample Questions from Olympiad Success:

Q.1 : a | Q.2 : d | Q.3 : a | Q.4 : b | Q.5 : b | Q.6 : c | Q.7 : a | Q.8 : a | Q.9 : a | Q.10 : c

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