This question has Statement-1 and Statement-2. Of the four choices given after the statements, choose the one that best describes the two statements.
Statement-1: A capillary is dipped in a liquid and liquid rises to a height h in it. As the temperature of the liquid is raised, the height h increases (if the density of the liquid and the angle of contact remain the same)
Statement-2: surface tension of a liquid decreases with the rise in its temperature.

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Statement-1 is true, Statement-2 is true; Statement-2 is not the correct explanation for statement-1

Statement-1is false, Statement-2 is true

Statement-1 is true, Statement-2 is false

Statement-1 is true, statement-2 is true; statement-2 is the correct explanation for statement-1

answer is B.

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Detailed Solution

Surface tension of a liquid decreases with the rise in temperature. At the boiling point of liquid, surface tension is zero. Capillary rise $h = \frac{2 Tcos θ}{rdg}$
As surface tension T decreases with rise in temperature hence capillary rise also
decreases.

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