KVPY Sample Paper KVPY Stream-SX Model Paper-25

  • question_answer
    The total number of isotopes of hydrogen and  of radioactive isotopes among them, respect;

    A) 3 and 1

    B) 3 and 2

    C) 2 and 1

    D) 2 and 0

    Correct Answer: A

    Solution :

    More polluted water has high biological oxygen demand.

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