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7th Class General Knowledge Miscellaneous / विविध Question Bank Science and Technology

  • question_answer
    The device shown in the picture is used for measuring growth in plants. It was invented in the early twentieth century by Sir Jagdish Chandra Bose. Name the device.

    A)  Electrocardiograph

    B)  Crescograph

    C)  Chromatogram

    D)  Seismograph

    Correct Answer: B

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