296. Assertion (A) : Solar radiation first and foremost heats the Earth's surface which in turn determines the temperature of the air above.
     Reason (R) : Heating of the air determines its stability, which affects cloud development and precipitation.

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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297. Assertion (A) : Windward slopes, those facing into the wind, experience more precipitation due to orographic uplift of the air.
     Reason (R) : Leeward sides of mountains are in the rain shadow and thus receive less precipitation.

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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298. Identify the correct sequence of the given processes regarding rainfall

1. 1. Unsaturated air, condensation, dew point, precipitation

   
   
   

   2. Dew point, condensation unsaturated air, precipitation

   
   
   

   3. Unsaturated air, dew point, condensation, precipitation

   
   
   

   4. Dew point, precipitation, condensation unsaturated air

   
   
   

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   NA

   Correct Option: C

   NA

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299. Assertion (A) : Carbon dioxide content of the atmosphere has increased in the last 200 years.
     Reason (R) : There has been widespread deforestation in many parts of the world.

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

   
   
   

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

   
   
   

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

   
   
   

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

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

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300. Assertion (A) : Because of the Sun's UV radiation, Earth's upper atmosphere is partly (0.1% or less) ionized plasma at altitudes of 70-1500 km.
     Reason (R) : This region, ionosphere, is coupled to both the magnetosphere and the neutral atmosphere.

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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