UPSC General Studies Sample Paper General Studies Sample Paper-8

  • question_answer
    Consider the following statements,                                                 
    1. Aerosols change cloud properties, alter precipitation patterns,                                
    2. Aerosols have a direct radiative forcing because they scatter and absorb solar and infrared radiation in atmosphere.                                                                          
    3. Long-term accumulation of black carbon aerosols in the Arctic and Himalaya is leading to increased melting of snow.                                                                       
    Which of the statements (s) given above is/ are correct?                                   

    A)  2 and 3           

    B)  1 and 3            

    C)  Only 2             

    D)  All of these   

    Correct Answer: D

    Solution :

    [d] The bulk of aerosols about 90% by mass have natural origins. Desert dust, volatile organic compounds from vegetation, smoke from forest fires and volcanic ash are natural sources of aerosols. All of the statements given are correct.

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