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Byju's Answer
Standard VIII
Physics
Factors Affecting Friction
Which of the ...
Question

Which of the following is not a lubricant?


A

Oil

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B

Grease

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C

Graphite

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D

None of these

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Solution

The correct option is D

None of these


The function of a lubricant is to decrease friction between two surfaces. Oil, grease, and graphite, when applied between two surfaces in contact, reduce friction between them. On the other hand, adding sand would increase friction.


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