The measurement of rainfall is made by an instrument known as:

(A) Hygrometer
(B) Barometer
(C) Hydrometer
(D) None of these

Q. An instrument used to measure the relative density of liquids is called:
(A) Hydrometer
(B) Hygrometer
(C) Barometer
(D) None of these

Q. An instrument that is used to measure air pressure in a certain environment is:
(A) Hydrometer
(B) Hygrometer
(C) Barometer
(D) None of these

Answers:
1. (D) None of these
2. (A) Hydrometer
3. (C) Barometer