CBSE (Central Board of Secondary Education) Class-8 Science: Questions 127 - 132 of 465

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Question 127

Question MCQ▾

Black oily material resulting from the destructive distillation of coal is:

Choices

Choice (4)Response

a.

Crude oil

b.

Petroleum

c.

Coal-tar

d.

Coal-gas

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Question 128

Question MCQ▾

Fire extinguishers used at airports and petrol pumps based on the principle of:

Choices

Choice (4)Response

a.

Smothering the fire

b.

Cooling the fire

c.

All of the above

d.

Question does not provide sufficient data or is vague

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Question 129

Question MCQ▾

Inexhaustible natural resources are:

Choices

Choice (4)Response

a.

A natural resource is anything in or above the earth that people use

b.

Resources which are present in unlimited quantity

c.

It is a fossil fuel

d.

Resources which are present in limited quantity

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Question 130

Question MCQ▾

Paraffin wax is used for:

Choices

Choice (4)Response

a.

Making candles, boot polish

b.

As a grease

c.

For air proofing in laboratories

d.

All a., b. and c. are correct

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Question 131

Question MCQ▾

Inexhaustible resources are also called as:

Choices

Choice (4)Response

a.

Fossil fuels

b.

Renewable resources

c.

Non-living resources

d.

Non-renewable resources

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Question 132

Question MCQ▾

The substances with low ignition temperature are called as:

Choices

Choice (4)Response

a.

Inflammable substance

b.

Fuel

c.

Flammable substance

d.

None of the above

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