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A Mcleod gauge is used to measure-
Question

A Mcleod gauge is used to measure-

A.

The acidity of a solution

B.

Vacuum pressure

C.

Diameter of fine particles

D.

Discharge through a river

Correct option is B


A McLeod gauge is a device used to measure very low pressures (vacuum pressure) in the range of 10−6 to 10−3 torr. It operates on the principle of Boyle’s law, where the pressure of a gas is inversely proportional to its volume.
Applications:
· Used in vacuum systems and research laboratories.
· It provides accurate readings for non-condensable gases.

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