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UPSC Geography The origin and evolution of the earth Question Bank Universe / Sun / Planets / Earth

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    DIRECTIONS: The following question consist of two statements. Statement I and Statement II. You are to examine these two statements carefully and select the answers to these questions using the codes given below. [NDA 2012-II]
    Statement I: The planet Neptune appears blue in colour.
    Statement II: The presence of methane gas in the atmosphere of Neptune is responsible for its colour

    A)  Both the statements are individually true and Statement II is the correct explanation of Statement I

    B)  Both the statements are individually true but Statement II is not the correct explanation of Statement I

    C)  Statement I is time, but Statement II is false       

    D)  Statement I is false, but Statement II is true       

    Correct Answer: A

    Solution :

     Neptune's atmosphere is made up of hydrogen, helium and methane. The methane in Neptune's upper atmosphere absorbs the red light from the sun but reflects the blue light from the Sun back into space. This is why Neptune appears blue.


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