2. Sample Papers
  3. 7th Class
  4. Social Science

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

  • question_answer
    Which of the following layers of our atmosphere helps in radio transmission?

    A)  Exosphere        

    B)  Stratosphere

    C)  Ionosphere       

    D)  Mesosphere

    E)  None of these

    Correct Answer: C

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