The surface of the head of a matchstick and sides of a match box are deliberately made rough to

Increase friction

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Decrease friction

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Increase pressure

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Decrease amount of heat

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Solution

The correct option is A Increase friction
Answer is A.

A match is a small stick of wood or strip of cardboard with a solidified mixture of flammable chemicals deposited on one end. When that end is struck on a rough surface, the friction generates enough heat to ignite the chemicals and produce a small flame. Some matches, called strike-anywhere matches, may be ignited by striking them on any rough surface.
Hence, the surface of the head of a matchstick and sides of a match box are deliberately made rough to increase friction.

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