Railways Sample Paper RRB (Group D) Sample Test Paper-2

  • question_answer
    Carbon dioxide is called a greenhouse gas because

    A)  Its concentration remains always higher than other gases

    B)  It is used in photosynthesis

    C)  It absorbs infrared radiation.

    D)  It emits visible radiation

    Correct Answer: C

    Solution :

    [c] Greenhouse gases catch the sun's radiation on its way back into space and reflect some of that warmth back to Earth, increasing temperatures. Carbon dioxide is known as greenhouse gas because of their ability to trap and reflect the sun's radiation back to Earth.


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