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  3. 7th Class
  4. Social Science

7th Class Social Science Sample Paper Social Studies - Sample Test Paper-10

  • question_answer
    Which of the following layers of atmosphere has very thin air?

    A)  Thermosphere               

    B)  Ionosphere

    C)  Mesosphere       

    D)         Exosphere

    E)  None of these

    Correct Answer: D

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