An instrument used to measure relative humidity is the?
A
hygrometer
B
hydrometer
C
pyrometer
D
manometer
Verified Correct Answer: A.
Physical Principles & Numerical Solution
A hydrometer is an instrument used for measuring the relative density of liquids based on the concept of buoyancy.
A hygrometer measures humidity, the amount of water vapor in air
Source: WAEC / JAMB / NECO Classroom Archive (Record #59028)