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9th Class General Knowledge Science and Technology Question Bank Science and Technology

  • question_answer
    Plastics have been around since 1860s. But the first plastic made wholly of artificial materials was not patented till the 20th century. It was named Bakelite after its inventor Leo Hendrik Bakeland. In which year was it patented?

    A)  1909

    B)  1911

    C)  1935

    D)  1954

    Correct Answer: A

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