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Question

Hair of shaving brush cling together when it is removed from water due to

A
Force of attraction between hair
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B
Surface tension
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C
Viscosity of water
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D
Charactersitic property of hair
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Solution

The correct option is B Surface tension
When the brush is taken out of water, the hairs cling together due to surface tension. This happens because the free surface of water tries to acquire a minimum surface area.
Hence, option B is correct.

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