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

4th Class Science Sample Paper Science Sample Paper-5

  • question_answer
    Which one of the following types of pollution causes depletion of ozone layer?

    A) Air pollution

    B)       Water pollution

    C) Soil pollution      

    D)       All of these

    E) None of these

    Correct Answer: A

    Solution :

    Not Available        


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