CBSE Class-8 Science: Questions 243 - 249 of 469

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Question number: 243

» Force and Pressure » Contact Forces » Friction

MCQ▾

Question

Contact force which comes into play when a body slides or tends to slide on another body is called as:

Choices

Choice (4) Response

a.

Thrust

b.

Magnetic force

c.

Gravitation

d.

Frictional force

Question number: 244

» Conservation of Plants and Animals » Conservation of Forest and Wildlife » Reforestation

MCQ▾

Question

Forest can be replenished by planting more trees and cutting less of forest trees is called as:

Choices

Choice (4) Response

a.

Reforestation

b.

Deforestation

c.

Afforestation

d.

All of the above

Question number: 245

» Force and Pressure » Exploring Forces » Force Can Change the Shape of an Object

MCQ▾

Question

What happens to a ball when it is squeezed?

Choices

Choice (4) Response

a.

Contact force

b.

Force

c.

Change its state of motion

d.

Change in its shape

Question number: 246

» Reaching the Age of Adolescence » Adolescence and Puberty » Voice Change

MCQ▾

Question

Protruding part of the throat in males is called as:

Choices

Choice (4) Response

a.

Voice box

b.

Adam’s apple

c.

Larynx

d.

None of the above

Question number: 247

» Conservation of Plants and Animals » Conservation of Plants » Deforestation and Its Causes

MCQ▾

Question

The causes of deforestation are:

Choices

Choice (4) Response

a.

To obtain forest product such as latex, resins, etc.

AND

To produce land for agricultural use

b.

To get wood for timber and fuel

c.

To procure land for mining

d.

All a. , b. and c. are correct

Question number: 248

» Conservation of Plants and Animals » Conservation of Plants » Deforestation

MCQ▾

Question

Cutting of trees at large scale is called as:

Choices

Choice (4) Response

a.

Deforestation

b.

Reforestation

c.

Afforestation

d.

Bio-diversity

Question number: 249

» Force and Pressure » Pressure » Introduction to Concept of Pressure

MCQ▾

Question

Why wheels of a battle tank move over a belt:

Choices

Choice (4) Response

a.

Belt helps to distributing the weight of the tank over a large area.

b.

Battle tank is heavy

c.

Belt helps to distributing the weight of the tank over a small area

d.

Increased pressure exerted by the tank on the ground

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