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3rd Class General Knowledge Science and Technology Question Bank Science and Technology

  • question_answer
    Identify 'X' and 'Y'.                                                                                                                           (2016)                                               
    Refrigerator Oliver Evans ?x?
    Television ?y? Used for entertainment

    A)  X = Keeps food fresh longer; Y = J.L Baird

    B)  X = Keeps food fresh; Y = Thomas Edison

    C)  X = Used for communication; Y = Marconi

    D)  None of these

    Correct Answer: A

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