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

Complete the following equation:- 2 Mg (s) + O2 (g)→ 

a)

2 Mg(s)

b)

2 MgO (s) 

c)

2 MgO (l) 

d)

MgO(s)

Q.2

Divya while studying the circuit of an electric fan observes that a plug connected to a fan contains a 3 A fuse. Why is the fuse needed?

a)

To reduce the voltage across the fan.

b)

To protect the fan from damage caused by a large current.

c)

To make it easier for the current to flow.

d)

To decrease the resistance of the circuit.

Q.3

Select a suitable figure from the four alternatives that would complete the figure matrix:



a)

1

b)

2

c)

3

d)

4

Q.4

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

a)

Glucose

b)

Protein

c)

Fatty acid

d)

Hemoglobin

Q.5

Fill in the blank:

Bryophyllum can reproduce by its ___________.

a)

stem

b)

flower

c)

leaves

d)

roots

Q.6

A sea breeze is caused due to __________.

a)

convection

b)

conduction

c)

radiation

d)

All of these

Q.7

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.8

An expert agriculturist suggested the farmer minimize the use of chemical fertilizers and instead use biofertilizers as they have many advantages over chemical fertilizers. Which of the following is not true regarding biofertilizers?          (Set-B     NSO, 2013)

a)

They are economical.

b)

They will least pollute the lake.

c)

They are renewable.

d)

They require large set-up for their production.

Q.9

Mohan saw a plant which he thought to be a legume and wanted to see if it had nitrogen-fixing bacteria. What would he look for?      (NSO, 2009)

a)

Absence  of root hairs

b)

An enlarged taproot

c)

Nodules present on the root

d)

An extensive fibrous root system

Q.10

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

a)

Conduction

b)

Convection

c)

Radiation

d)

Diffusion

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Answers to Sample Questions from Olympiad Success:

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

Answers to Sample Questions from Olympiad Success:

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

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