181. The approximate amount of the sun's energy called insolation which reaches the Earth's surface is

1. 1. 90%

   
   
   

   2. 75%

   
   
   

   3. 45%

   
   
   

   4. 50%

   
   
   

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   NA

   Correct Option: D

   NA

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182. The clouds extending from one side of horizon to other as a dark grey sheet having uniform based are called

1. 1. stratus clouds

   
   
   

   2. Cumulus clouds

   
   
   

   3. Circus clouds

   
   
   

   4. Nimbus clouds

   
   
   

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   NA

   Correct Option: A

   NA

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183. Which of the following statement is / are correct

1. 1. Altocumulus - altus and cumulus - high heap

   
   
   

   2. Altostratus - altus and stratus -high layer

   
   
   

   3. Cirrocumulus - circus and cumulus - lock of hair and heap

   
   
   

   4. All of the above

   
   
   

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   NA

   Correct Option: D

   NA

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184. Clouds usually form when

1. 1. air temperature reaches the dew point

   
   
   

   2. evapouration has warmed the surrounding air

   
   
   

   3. relative humidity is 0%

   
   
   

   4. condensation nuclei have been removed from the air

   
   
   

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   NA

   Correct Option: A

   NA

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185. 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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