CBSE Class-6 Science: Questions 231 - 237 of 318

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Question number: 231

» Water » Conservation of Water » Rainwater Harvesting

MCQ▾

Question

The purpose of recharge well is:

Choices

Choice (4) Response

a.

To recharge the ground water

b.

To collect vast amount of water

c.

To collect vast amount of water falling on ground quickly when it rains and make it seep into soil gradually

d.

Question does not provide sufficient data or is vague

Question number: 232

» 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: 233

» 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: 234

» 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: 235

» 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: 236

» Electricity and Circuits » Electric Switch » Working of an Electric Switch

MCQ▾

Question

The purpose of electric switch is to:

Choices

Choice (4) Response

a.

Turn off an electrical appliance

b.

Turn on an electrical appliance

c.

Close the circuit

d.

Turn on or turn off an electrical appliance

Question number: 237

» Water » Oceans » Saline Water

MCQ▾

Question

Maximum amount of water on earth is:

Choices

Choice (4) Response

a.

Saline water

b.

Ground water

c.

Fresh water

d.

Question does not provide sufficient data or is vague

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