Why do we to prefer mercury in a barometer

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Solution

Mercury is preferred in barometer because mercury does not stick with the glass tube and the height $(= 76 c m)$ upto which it rises is measurable.

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Why is mercury used in a barometer?

Statement 1: We can use water instead of mercury to construct a barometer for measuring the atmospheric pressure.

Statement 2: We do not use water in a barometer because it will be very inconvenient to use.

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