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  1. The ‘Green House effect’ is produced due to the presence of excess amount of

    2. A.

     Sulphur dioxide
    B.

     Nitrogen dioxide
    C.

     Carbon monoxide
    D.

     Methane

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    Answer : Option D

    Explanation :

    By their percentage contribution to the greenhouse effect on Earth the four major gases are: Water vapour (36-70%), Carbon dioxide (9-26%), Methane (4-9%) and Ozone (3-7%).

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