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  3. Railways
  4. General Science & Technology
  5. Heat

Railways General Science & Technology Heat Sample Paper Heat Sample Test Paper-4

  • question_answer
    'Green House effect' means

    A)  Pollution in houses in tropical region

    B)  Trapping of solar energy due to atmospheric oxygen

    C)  Trapping of solar energy due to atmospheric carbon dioxide

    D)  None of the above

    Correct Answer: C

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