NCERT Based General Studies (GS): Questions 2663 - 2668 of 3450

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Question number: 2663

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

MCQ▾

Question

Water gets polluted due to:

Choices

Choice (4) Response
a.

Direct sources

b.

Indirect sources

c. Both a. and b. are correct
d. None of the above

Question number: 2664

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

MCQ▾

Question

Laws of reflection are:

Choices

Choice (4) Response
a.

The incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane

b.

The angle of incidence (i) is equal to the angle of reflection (r)

c. Both a. and b. are correct
d. None of the above

Question number: 2665

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

MCQ▾

Question

Angle of reflection is defined as:

Choices

Choice (4) Response
a.

The angle which the incident ray makes with the normal

b.

Angle between the incident ray and reflected ray

c.

The angle which reflected ray makes with the normal

d. Question does not provide sufficient data or is vague

Question number: 2666

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

MCQ▾

Question

Air pollution is defined as:

Choices

Choice (4) Response
a.

Addition of unwanted and harmful substances in the air

b.

Contamination of air by impurities

c. All of the above
d. None of the above

Question number: 2667

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

MCQ▾

Question

Diffuse reflection is defined as:

Choices

Choice (4) Response
a.

Reflection from any smooth surface

b.

Irregular reflection

c.

Reflection from any rough surface

d. Both b. and c. are correct

Question number: 2668

» Science » Class-8 NCERT » Light (Reflections)

MCQ▾

Question

A Number of reflections taking place together are called as:

Choices

Choice (4) Response
a.

Multiple reflections

b.

Lateral inversion

c.

Dispersion

d. Question does not provide sufficient data or is vague

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