ChemistryB.O.D is

B.O.D is

  1. A

    The amount of O2 utilized by organisms in the water.

  2. B

    The amount of O2 utilized by microorganisms for decomposition.

  3. C

    The total amount of O2 present in water

  4. D

    All of these

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    Solution:

    Refer NCERT Page No. 407.

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