Which of the following instruments may be used to measure relative humidity?
A
Hydrometer
B
Manometer
C
Hygrometer
D
Hypsometer
Verified Correct Answer: C.
Physical Principles & Numerical Solution
A hygrometer is an instrument that is used to measure water vapor in the atmosphere. This is also commonly referred to as relative humidity in the atmosphere.
Source: WAEC / JAMB / NECO Classroom Archive (Record #60733)