56. Which of the following statements is / are correct about convection ?

1. 1. The act of process of conveying ; transmission

   
   
   

   2. Heat transfer in a gas or liquid by the circulation of currents from one region to another

   
   
   

   3. The transfer of heat or other atmospheric properties by massive motion within the atmosphere especially by such motion directed upward

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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57. What is relative humidity ?

1. 1. It is the ratio of specific humidity

   
   
   

   2. It is the indicator of moisture content in the atmosphere

   
   
   

   3. It implies maximum vapour pressure in the atmosphere

   
   
   

   4. It is present everywhere

   
   
   

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   NA

   Correct Option: A

   NA

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58. Which of the following statement is true

1. 1. Saturated air has a relative humidity of 100%

   
   
   

   2. Air with a relative humidity in excess of 100% is said to be supersaturated

   
   
   

   3. Relative humidity is measured with a hygrometer

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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59. Which of the following statement is / are correct

1. 1. High clouds - Cirrocumulus, Cirrus, Cirrostratus

   
   
   

   2. Middle clouds - Altostratus, Altocummulus

   
   
   

   3. Low clouds - Cumulus, Stratocumulus, Nimbostratus, Stratus

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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60. What is a cloud ?

1. 1. It is a kind of mist

   
   
   

   2. It is a kind of frost

   
   
   

   3. It is a kind condensed form of dew

   
   
   

   4. It is a kind of fog lifted above the earth's surface

   
   
   

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   NA

   Correct Option: A

   NA

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