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Question

With rise in temperature, viscosity of a liquid :

A
increases
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B
decreases
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C
remains constant
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D
may increase or decrease
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Solution

The correct option is C decreases
In liquid, the main cause of viscosity is collision between that molecules.

With increase in temperature this collision force decreases as the energy of particles become more, hence movement of become free and easy.

Hence, we say viscocity in liquid decreases with temperature.

Therefore, option B is correct.

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