Science (NCERT Based General Studies (GS)): Questions 412 - 419 of 1207

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Question number: 412

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

MCQ▾

Question

Periscope is defined as:

Choices

Choice (4) Response

a.

Right-left reversal of image by a plane mirror

b.

An instrument used to see above obstacles

c.

An arrangement in which beautiful patterns are formed

d.

All of the above

Question number: 413

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

MCQ▾

Question

Green House Gases are:

Choices

Choice (4) Response

a.

Water Vapours, Methane

b.

Carbon dioxide, nitrogen oxide

c.

Ozone

d.

All a. , b. and c. are correct

Question number: 414

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

MCQ▾

Question

Increasing levels of Green House gases like Co2 are leading to:

Choices

Choice (4) Response

a.

Air Pollution

b.

Global warming

c.

Green House effect

d.

All of the above

Question number: 415

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

MCQ▾

Question

Pollutant used in refrigerators, air conditioners and aerosol sprays is

Choices

Choice (4) Response

a.

Oxides of nitrogen

b.

Methane

c.

CFC’s

d.

All of the above

Question number: 416

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

MCQ▾

Question

The bouncing back of the light after striking a polished surface is called as:

Choices

Choice (4) Response

a.

Reflected ray

b.

Reflection of light

c.

Incident ray

d.

Question does not provide sufficient data or is vague

Question number: 417

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

MCQ▾

Question

Green House gases create

Choices

Choice (4) Response

a.

Acid rain

b.

Pollution

c.

Green House effect

d.

All of the above

Question number: 418

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

MCQ▾

Question

GAP is a:

Choices

Choice (4) Response

a.

Ground water pollution

b.

Ganga action plan

c.

Garbage Action plan

d.

Ground water Action Plan

Question number: 419

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

MCQ▾

Question

A reflected ray is:

Choices

Choice (4) Response

a.

A light ray which bounces back into same medium after reflection from reflected surface.

b.

Ray strikes the reflecting surface

c.

Perpendicular line

d.

All of the above

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