NSO Level 1- Science Olympiad (SOF) Class 7: Questions 210 - 215 of 593

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Question number: 210

» Fibre to Fabric

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MCQ▾

Question

Cashmere wool is obtained from which of the following animal?

Image showing the animal

Image Showing the Animal

Image showing the animal

Choices

Choice (4) Response

a.

Rabbit

b.

Sheep

c.

Camel.

d.

Goat

Question number: 211

» Physical and Chemical Changes

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MCQ▾

Question

Which of the following is the example of chemical change?

Choices

Choice (4) Response

a.

Crystallization

b.

Digestion

c.

Photosynthesis

d.

Both b. and c. are correct

Question number: 212

» Acids, Bases and Salts

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MCQ▾

Question

Which of the following is true for strong acid?

Figure shows the Strong acid

Figure Shows the Strong Acid

Figure shows the Strong acid

Choices

Choice (4) Response

a.

The acid ionizes completely in a solution.

b.

It accepts great number of H+ ions.

c.

The acid does not completely dissociate in a solution.

d.

None of the above

Question number: 213

» Heat

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MCQ▾

Question

Which of the following are the examples of conductors?

Choices

Choice (4) Response

a.

Plastic

b.

Aluminium

c.

Wood

d.

None of the above

Question number: 214

» Acids, Bases and Salts

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MCQ▾

Question

How does the excessive use of chemical fertilizers in the agricultural fields affect the pH of soil?

Choices

Choice (4) Response

a.

Drops the pH in acidic range.

b.

pH is no effect (neutral).

c.

Drops the pH in basic range.

d.

All of the above

Question number: 215

» Physical and Chemical Changes

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MCQ▾

Question

Which of the following indicates that a chemical change has occurred?

Choices

Choice (4) Response

a.

Production of heat.

b.

Evolution of gas.

c.

Generation of light.

d.

All a. , b. and c. are correct

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