291. Assertion (A) : The atmosphere receives most of the heat only indirectly from the sun and directly from the earth's surface.
     Reason (R) : The conversion from short wave solar to long wave terrestrial energy takes place at the earth's surface.
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1. 1. A is false but R is true

   
   
   

   2. A is true but R is false

   
   
   

   3. Both (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   4. Both (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

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   NA

   Correct Option: D

   NA

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292. Assertion (A) : The climate of Asia is impacted by the annual fluctuation of wind direction due to the monsoon.
     Reason (R) : Pressure dominance also affects the receipt of solar radiation.

1. 1. If (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. If (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. If (A) is true but (R) is false
      

   
   
   

   4. If (A) is false but (R) is true
      

   
   
   

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   NA

   Correct Option: B

   NA

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293. Assertion (A) : In Stratosphere the temperature increase with altitude results in a layering effect.
     Reason (R) : It creates a global "Inversion layer", and reduces vertical convection.

1. 1. If (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. If (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. If (A) is true but (R) is false
      

   
   
   

   4. If A) is false but (R) is true
      

   
   
   

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   NA

   Correct Option: B

   NA

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294. Assertion (A) : Although the concentration of ozone is at most 12 parts per million (ppm), it is very effective at absorbing the harmful ultraviolet (UV) rays of the sun and protecting life on Earth.
     Reason (R) : Ozone is a molecule made of three oxygen atoms. The oxygen molecule we need to breathe contains two oxygen atoms.

1. 1. If (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. If (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. If (A) is true but (R) is false
      

   
   
   

   4. If (A) is false but (R) is true
      

   
   
   

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   NA

   Correct Option: B

   NA

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295. Assertion (A) : Noctilucent clouds are located in the mesosphere.
     Reason (R) : The mesosphere is also the region of the ionosphere known as the D layer.

1. 1. If (A) and (R) are true and (R) is the correct explanation of (A)
      

   
   
   

   2. If (A) and (R) are true but (R) is not the correct explanation of (A)
      

   
   
   

   3. If (A) is true but (R) is false
      

   
   
   

   4. If (A) is false but (R) is true
      

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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