Name the fluid that is used in a Barometer for measuring the atmospheric pressure.
A
Mercury
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B
Water
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C
Kerosene
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D
Oil
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Solution
The correct option is A Mercury A Barometer is a device which is used to measure the atmospheric pressure. It consists of a glass tube closed at one end immersed in a container filled with mercury. The change in the level of mercury in the tube is due to the change in atmospheric pressure.