2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    The conversion of nitrate and nitrite salts to elemental nitrogen is called:

    A) Nitrification

    B)  Denitrification

    C)  Assimilation

    D)  Ammonification

    E)  None of these

    Correct Answer: B

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