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

4th Class Science Sample Paper Science Olympiad Model Test Paper-17

  • question_answer
    The protective cover of ozone is present in :

    A) Stratosphere

    B) Troposphere

    C) Mantle              

    D) Thermosphere

    E) None of these

    Correct Answer: A

    Solution :

    Not Available              


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