NSO Level 1- Science Olympiad (SOF) Class 7: Questions 168 - 171 of 597

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Question number: 168

» Physical and Chemical Changes

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MCQ▾

Question

Solidification of water to ice is due to which of the following?

Solidification of water to ice

Solidification of Water to Ice

Choices

Choice (4)Response

a.

Physical change

b.

Biological change

c.

Chemical change

d.

Question does not provide sufficient data or is vague

Question number: 169

» Fibre to Fabric

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MCQ▾

Question

Which of the following statements are correct?

  1. The plant fibers are made up of cellulose which is a structural part in the plant world.

  2. The wool obtained from the fleece of Angora goat is called Mohair.

  3. The cocoon left after the moth is emerged out is used for silk production.

Choices

Choice (4)Response

a.

Only (1)

b.

(1) and (2)

c.

Only (2)

d.

Question does not provide sufficient data or is vague

Question number: 170

» Fibre to Fabric

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MCQ▾

Question

Which of the following is true for Rampur bushair sheep?

Rampur bushair sheep

Rampur Bushair Sheep

Choices

Choice (4)Response

a.

The wool is used to make woolen blankets.

b.

It is found in Himachal Pradesh.

c.

The wool is brown in color.

d.

All a. , b. and c. are correct

Question number: 171

» Physical and Chemical Changes

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MCQ▾

Question

Burning of a candle indicates which of the following changes?

Image of the burning of candle

Image of the Burning of Candle

Choices

Choice (4)Response

a.

Physical change

b.

Combination of Physical and Chemical change.

c.

Chemical change

d.

No change.

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