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

  • question_answer
    This gaseous chemical which consists of three atoms is poisonous yet vital to human beings, as it protects us from harmful ultra-violet radiation from the sun. Name this gas.

    A)  Nitrous oxide

    B)  Ozone

    C)  Carbon dioxide

    D)  Water vapour

    Correct Answer: B

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