NCERT Based General Studies (GS): Questions 2648 - 2654 of 3450

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Question number: 2648

» Science » Class-8 NCERT » Pollution of Air and Water (Water Pollution)

MCQ▾

Question

Different methods used to purify water are:

Choices

Choice (4) Response

a.

Chlorination

AND

Ultraviolet rays

b.

Boiling

c.

Use the physical method of removing impurities

d.

All a. , b. and c. are correct

Question number: 2649

» Science » Class-8 NCERT » Light (Concept of Light)

MCQ▾

Question

What makes thing visible:

Choices

Choice (4) Response

a.

Only when light reflected by an object enters our eyes

b.

Eyes

c.

In presence of light

d.

In the dark

Question number: 2650

» Science » Class-8 NCERT » Pollution of Air and Water (Water Pollution)

MCQ▾

Question

Water treatment plant should be installed in all:

Choices

Choice (4) Response

a.

Companies

b.

Industrial areas

c.

Houses

d.

None of the above

Question number: 2651

» Science » Class-8 NCERT » Light (Types of Reflection)

MCQ▾

Question

Reflection of light from a smooth surface is called as:

Choices

Choice (4) Response

a.

Diffuse reflection

b.

Regular reflection

c.

Specular reflection

d.

Both b. and c. are correct

Question number: 2652

» Science » Class-8 NCERT » Light (Laws of Reflection)

MCQ▾

Question

A ray which strikes the reflecting surface is called as:

Choices

Choice (4) Response

a.

Incident ray

b.

Reflected ray

c.

Normal

d.

All of the above

Question number: 2653

» Science » Class-8 NCERT » Pollution of Air and Water (Air Pollution)

MCQ▾

Question

Man-Made resources which lead to air pollution are:

Choices

Choice (4) Response

a.

Invention of automobiles

AND

Industrialization

b.

Overpopulation, deforestation

c.

Urbanization

d.

All a. , b. and c. are correct

Question number: 2654

» Science » Class-8 NCERT » Pollution of Air and Water (Water Pollution)

MCQ▾

Question

Water treatment process can be categorized as:

Choices

Choice (4) Response

a.

Domestic water treatment

b.

Industrial water treatment

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

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