2. Sample Papers
  3. 9th Class
  4. General Knowledge

9th Class General Knowledge Sample Paper General Knowledge Sample Test Paper-5

  • question_answer
    Jonas Salk discovered polio vaccine. He belonged to which country?

    A)  China                          

    B)  Netherlands

    C)  Italy                            

    D)  USA                             

    E)  None of these     

    Correct Answer: D

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