NCERT Class 8 Science-Friction[Increasing and Reducing Friction] [NCERT Based General Studies (GS)]: Questions 1 - 8 of 8

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Question 1

Question MCQ▾

Fluid friction is also called as:

Choices

Choice (4)Response

a.

Viscous drag

b.

Drag

c.

Both a. and b. are correct

d.

None of the above

Edit

Question 2

Question MCQ▾

The friction which comes into play when a body slides over another body is:

Choices

Choice (4)Response

a.

Rolling Friction

b.

Sliding friction

c.

Treading

d.

Drag

Edit

Question 3

Question MCQ▾

Ball bearings are type of:

Choices

Choice (4)Response

a.

Axle

b.

Treading

c.

Rollers

d.

Wheels

Edit

Question 4

Question MCQ▾

Gases and liquids are called:

Choices

Choice (4)Response

a.

Fluids

b.

Viscous drag

c.

Drag

d.

All of the above

Edit

Question 5

Question MCQ▾

Rolling friction:

Choices

Choice (4)Response

a.

Increases the friction

b.

Has no effect

c.

Reduces the friction

d.

Lesser than sliding friction

Edit

Question 6

Question MCQ▾

Lubrication is a process of:

Choices

Choice (4)Response

a.

Fluid friction

b.

Converting dry friction into wet friction

c.

Use of lubricants for reducing friction

d.

Both b. and c. are correct

Edit

Question 7

Question MCQ▾

To overcome drag objects moving through fluid are given special shapes is called as

Choices

Choice (4)Response

a.

Streamlining of the object

b.

Treading

c.

Lubrication

d.

Ball bearing

Edit

Question 8

Question MCQ▾

Trading of tyre is done:

Choices

Choice (4)Response

a.

To Increase the friction

b.

To Decrease the friction

c.

Has no effect on friction

d.

None of the above

Edit