From following statements choose the correct combination.
A. Grease is used to reduce friction in bicycle chain
B. Ball bearings are used to reduce friction in a fan
C. Oil can be used to increase friction in a car engine.
D. Talc can be used to reduce friction when an object is sliding on a surface.

A, B, D

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A, C, D

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B, C, D

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A, B, C

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Solution

The correct option is C A, B, D
Friction is reduced by using oil, grease, ball bearings and talc.
Because by the use of this things, the surface becomes smooth and therefore it helps in reducing the force of friction.

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Similar questions

Of the following statements choose the correct combination that helps reduce friction:
A) Grease is used to reduce friction in bicycle chain
B) Ball bearings are used to reduced friction in a fan
C) Oil can be used to increase friction in a car engine
D) Talc can be used to reduce friction when an object is sliding on a surface.

Q. Choose the correct statements from the following:
A) Grease is used to reduce friction in the bicycle chain.
B) Ball bearings are used to reduce friction in a fan.
C) Oil can be used to increase friction in a car engine.
D) Talc can be used to reduce friction in a carrom board.

Q. Choose the correct statement from the following:

1. Grease is used to reduce friction in the bicycle chain.
2. Ball bearings are used to reduce friction in a fan.
3. Oil is used to increase friction in car parts.
4. Talcum powder is used to reduce friction on a carrom board.

Q. Which of the following should be used to reduce friction on a carrom board?
(a) a lubricating oil
(b) a dry lubricant
(c) a layer of grease
(d) a ball bearing

Most machines use ball bearings to reduce the energy lost in friction since rolling friction is smaller than sliding friction.

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From following statements choose the correct combination.A. Grease is used to reduce friction in bicycle chainB. Ball bearings are used to reduce friction in a fanC. Oil can be used to increase friction in a car engine.D. Talc can be used to reduce friction when an object is sliding on a surface.

The correct option is C A, B, DFriction is reduced by using oil, grease, ball bearings and talc.Because by the use of this things, the surface becomes smooth and therefore it helps in reducing the force of friction.

The correct option is C A, B, D
Friction is reduced by using oil, grease, ball bearings and talc.
Because by the use of this things, the surface becomes smooth and therefore it helps in reducing the force of friction.