CBSE Class-6 Science: Questions 254 - 260 of 318

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Question number: 254

» Air Around Us » Oxygen Cycle » Photosynthesis

MCQ▾

Question

The process by which the lost oxygen is continuously replenished in the air is called as:

Choices

Choice (4) Response
a.

Photosynthesis

b.

Respiration

c.

Oxygen Cycle

d. Question does not provide sufficient data or is vague

Question number: 255

» Water » Source of Water » Presence of Water on Earth

MCQ▾

Question

Why the earth is called blue planet?

Choices

Choice (4) Response
a.

Because water covers three fourth of the earth’s surface

b.

Because colour of earth is blue

c.

Because when earth seen from outer space looks blue

d. All of the above

Question number: 256

» Water » How Much Water Do We Use? » Consumption of Water

MCQ▾

Question

Liquid essential for life is:

Choices

Choice (4) Response
a.

Water

b.

Oxygen

c.

Rain

d. None of the above

Question number: 257

» Water » Water Cycle » Ground Water

MCQ▾

Question

The water which we take out for our use by digging wells and tube wells or by installing hand pumps are

Choices

Choice (4) Response
a.

Rain water

b.

Saline water

c.

Fresh water

d.

Ground Water

Question number: 258

» Electricity and Circuits » Electric Conductors and Insulators » Insulators

MCQ▾

Question

Rubber, plastic, ceramics, jute, thermocol, cotton, paper and air are:

Choices

Choice (4) Response
a.

Insulators

b.

Conductors

c.

Semi-conductors

d. None of the above

Question number: 259

» Water » Oceans » Fresh Water

MCQ▾

Question

Fresh water sources are:

Choices

Choice (4) Response
a.

Wells, springs and glaciers

b.

Rivers

c.

Lakes, ponds

d. All a. , b. and c. are correct

Question number: 260

» Water » Conservation of Water » Prevention of Water Wastage

MCQ▾

Question

Various methods of conservation of water are:

Choices

Choice (4) Response
a.

Reducing water pollution

b.

Plant more trees

c.

Reusing water

d. All a. , b. and c. are correct

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