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4th Class General Knowledge Our Environment Question Bank Environment and its Conservation

  • question_answer
    The Earth's atmosphere is made up of various gases. Which of the following best describes this composition of gases?

    A)  Oxygen - 78%, Nitrogen - 21%, Others - 1%

    B)  Oxygen - 60%, Nitrogen - 30%, Others - 10%

    C)  Nitrogen - 78%, Oxygen - 21%, Others - 1%

    D)  Nitrogen - 78%, Oxygen - 21%, Carbon dioxide - 1%

    Correct Answer: C

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