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  3. SSC

SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-10

  • question_answer
    Who invented ?Helicopter??

    A) Cockrell            

    B) Brequet

    C) Otis                              

    D) Frank Whittle

    Correct Answer: B

    Solution :

    In 1906, two French brothers. Jacques and Louis Breguet, began experimenting with airfoils for helicopters and in 1907, those experiments resulted in the Gyroplane No, 1


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