WB JEE Medical WB JEE Medical Solved Paper-2011

  • question_answer
    Which one of the following is mainly responsible for green houses effect?

    A)  \[S{{O}_{2}}\]                                  

    B)  \[C{{O}_{2}}\]

    C)  \[CO\]                                 

    D) \[~{{O}_{2}}\]

    Correct Answer: B

    Solution :

                    Green house effect refers to selective energy absorption by \[C{{O}_{2}}\]in the atmosphere which allows short wavelength energy to pass through but absorbs longer wavelength and reflects heat back to earth. It is caused by carbon dioxide, methane, nitrogen dioxide and water vapour.


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