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

1. 1. Dew point

   
   
   

   2. Specific humidity

   
   
   

   3. Frost point

   
   
   

   4. Humidity during rain

   
   
   

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   NA

   Correct Option: C

   NA

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162. A device used to measure humidity is called a

1. 1. Psychrometer

   
   
   

   2. Hygrometer

   
   
   

   3. Both

   
   
   

   4. None

   
   
   

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   NA

   Correct Option: C

   NA

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163. Which of the following is defined as the ratio of the partial pressure of water vapour in a parcel of air to the saturated vapour pressure of water vapour at a prescribed temperature ?

1. 1. Absolute humidity

   
   
   

   2. Specific humidity

   
   
   

   3. Relative humidity

   
   
   

   4. Humidity during rain

   
   
   

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   NA

   Correct Option: C

   NA

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164. Which of the following does not affect visibility on the ground ?

1. 1. Mist

   
   
   

   2. Fog

   
   
   

   3. Haze

   
   
   

   4. Dew

   
   
   

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   NA

   Correct Option: D

   NA

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165. The mass of water vapour divided by the mass of dry air in a volume of air at a given temperature is called

1. 1. Absolute humidity

   
   
   

   2. Specific humidity

   
   
   

   3. Relative humidity

   
   
   

   4. Humidity during rain

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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