passwella.
Menu

JAMB Physics 1983 Question 44

Question 44

Change of State and Vapours

Which of the following may be used to determine the relative humidity in a physics laboratory? I. Manometer II. Wet-and-dry bulb hygrometer III. Hair hygrometer IV. A hydrometer.

  1. A.I only
  2. B.II and III only
  3. C.II only
  4. D.III only
  5. E.II, III and IV only
Show the answer and explanation

Answer: B (II and III only)

Explanation

Hygrometers measure humidity. A manometer measures gas pressure and a hydrometer measures the relative density of liquids.