Air Around Us (CBSE (Central Board of Secondary Education- Board Exam) Class-6 Science): Questions 1 - 7 of 19

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Question number: 1

» Air Around Us » Composition of Air » Dust and Smoke

MCQ▾

Question

Sources of dust particles present in the air are:

Choices

Choice (4) Response

a.

Blowing of wind

AND

Traffic on the road

b.

Dusting at home, earth moving operations

c.

Construction activities and agricultural practices

d.

All a. , b. and c. are correct

Question number: 2

» Air Around Us » Oxygen for Aquatic Animals & Plants » Air in Soil

MCQ▾

Question

A lump of cotton wool shrink when put in water:

Choices

Choice (4) Response

a.

Because it is light in weight

b.

Because it is white in colour

c.

Because it contains a lot of air in large spaces between its fibres

d.

All of the above

Question number: 3

» Air Around Us » Composition of Air » Carbon Dioxide

MCQ▾

Question

The gas which helps to keep the earth warm is:

Choices

Choice (4) Response

a.

Oxygen

b.

Nitrogen

c.

Carbon-dioxide

d.

None of the above

Question number: 4

» Air Around Us » Oxygen for Aquatic Animals & Plants » Air in Water

MCQ▾

Question

Aquatic animals and aquatic plants takes oxygen from air dissolved in:

Choices

Choice (4) Response

a.

Water

b.

Salt

c.

Question does not provide sufficient data or is vague

d.

None of the above

Question number: 5

» Air Around Us » Role of Air » Useful Properties of Air

MCQ▾

Question

Uses of air are:

Choices

Choice (4) Response

a.

Compressed air is used to fill tyres

AND

Used by human beings for breathing

b.

Dispersal of seeds and pollen

c.

For burning fuels

d.

All a. , b. and c. are correct

Question number: 6

» Air Around Us » Composition of Air » Water Vapor

MCQ▾

Question

The amount of water vapour present in the air is known as:

Choices

Choice (4) Response

a.

Humidity

b.

Transpiration

c.

Evaporation

d.

Moisture

Question number: 7

» Air Around Us » Air » Weather Cock

MCQ▾

Question

Weathercock is a device used to show the direction in which the

Choices

Choice (4) Response

a.

Water is moving

b.

Wind is moving

c.

Air is moving

d.

All of the above

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