Water Resources Engineering MCQ with Answers

96) Operation of McLeod gauge used for low pressure measurement is based on the principle of

Answer is:

Boyle′s law

97) An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of

Answer is:

0.75

98) In an isothermal atmosphere, the pressure

Answer is:

varies in the same way as the density

99) Mercury is often used in barometer because

Answer is:

both the height of barometer will be less and its vapour pressure is so low that it may be neglected

100) Barometer is used to measure

Answer is:

atmospheric pressure

Explanation:

Atmospheric pressure: The atmospheric air exerts a normal pressure upon all surfaces with which it is in contact and it is known as atmospheric pressure. Atmospheric pressure is also known as barometric pressure. Barometer is used to measure atmospheric pressure.