Humidity MCQ Questions and Answers for Practice

1. A psychrometer is

1. A hair element instrument
2. A wet and dry bulb humidity instrument
3. An instrument that senses psychological disturbances
4. An instrument that reads directly in dew point

2. A device used to measure humidity is called a

1. Psychrometer
2. Hygrometer
3. Both
4. None

3. All of the following statements are true except

1. Relative humidity of a mass of air falls if temperature of the air rises
2. Air is saturated when its relative humidity is 100%
3. When air subsides its relative humidity decreases
4. The relative humidity of a mass of air remains constant when the air crosses over a cold land surface from a warm water surface

4. Amount of water vapor in air is regarded as

1. water vapor
2. humidity
3. mildness
4. pressure

5. Amount of water vapour in air is regarded as

1. water vapour
2. Humidity
3. Mildness
4. Pressure

6. Because of which one of the following factors, clouds do not precipitate in deserts?

1. Low pressure
2. Low humidity
3. High wind velocity
4. High temperature

7. Condensation is a process which occurs when

1. temperature falls below 0 degree Centigrate
2. absolute humidity becomes equal to relative humidity
3. temperature in the air parcel remains static
4. relative humidity becomes 100% and more

8. Dew point normally occurs when a mass of air has relative humidity of

1. 50%
2. 75%
3. 80%
4. 100%

9. Factor influencing humidity includes

1. temperature
2. pressure
3. water
4. osmosis

10. Humidity is the result of

1. Evapouration
2. Transpiration
3. Presence of heat
4. Presence of moisture content in the air

11. Humidity refers to

1. Brackishness of water
2. Latent heat
3. Water vapour in the atmosphere
4. None of these

12. If the dew point is below freezing, it is referred to as

1. Dew point
2. Specific humidity
3. Frost point
4. Humidity during rain

13. Point at which gases turn in to liquid is called its

1. peak point
2. dew point
3. converting point
4. equilibrium point

14. Relative humidity of atmosphere is measured by

1. Hydrometer
2. Hygrometer
3. Potentiometer
4. Lactometer

15. Relative humidity refers to

1. Absolute amount of water vapour in the atmosphere
2. The amount of hygroscopic nuclei in the atmosphere
3. Saturated vapour pressure
4. Ration of actual amount of water vapour in the air to the amount it could hold at the temperature