A manometer is an instrument used for measuring
A
Relative density of liquid
B
Pressure in liquids and gases
C
Humidity
D
Atmospheric pressure
Verified Correct Answer: B.
Physical Principles & Numerical Solution
a manometer is used to measure pressure in liquids and gases. Manometer gauges measure the pressure of gases and vapors from atmospheric to about 1 Pa by balancing the force exerted by the gas or vapor against the weight of a column of liquid, usually mercury, water, or oil.
Source: Myschool Past Questions Archive (Record #44730)