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5th Class Science Our Environment Question Bank Our Environment and Natural Calamities

  • question_answer
    Which among the following is incorrect for the nitrogen gas?

    A) Nitrogen constitutes about 78% of air.

    B) Nitrogen is used in fertilizers.

    C) Nitrogen is used in burning process.

    D) Nitrogen is used by plants with the help of bacteria.              

    E) None of these

    Correct Answer: C

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