UPSC General Studies Sample Paper General Studies Sample Paper-1

  • question_answer
    Which of the following statement(s) is/are correct regarding Eutrophication?
    1. It decreases the Biological Oxygen Demand (BOD).
    2. It is caused only due to human activities.
    3. It increases the biomass of the phytoplanktons.
    Select the correct answer using the codes given below.

    A)  1 and 2           

    B)  2 and 3             

    C)  1 and 3           

    D)  Only 3

    Correct Answer: D

    Solution :

    [d] Eutrophication can be caused by human activities as well as naturally. Eutrophication leads to increased Biological Oxygen Demand (BOD) due to the increased consumption of dissolved oxygen. It increases   the biomass of the phytoplanktons.

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