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Q.

Kerosene oil rises up in a wick of a lantern because of

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a

Capillary action

b

Diffusion of the oil through the wick

c

Buoyant force of air

d

The gravitational pull of the wick

answer is B.

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Detailed Solution

Kerosene oil rises up in wick of a lantern because of capillary action. If the surface tension of oil is zero, then it will not rise, so oil rises up in a wick of a lantern due to surface tension.

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