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29-02-2016
Chemistry

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Which of the following would increase friction?
A. Motor oil
B. Sand
C. Soap
D. Water

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olemakpadu olemakpadu

29-02-2016

B. Sand.

Sand would definitely increase friction because of the roughness of it surface. When its surface comes with another rough surface it would tend to increase friction. All other options given tend to reduce friction one way or the other.

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