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  4. Ecology And Environment

SSC Ecology And Environment Sample Paper NCERT Sample Paper-2

  • question_answer
    The high amount of E. coli in water, is the indicator of

    A)  Hardness of water

    B)  Industrial pollution

    C)  Sewage pollution

    D)  Presence of chlorine in water

    Correct Answer: C

    Solution :

    [c] The high amount of E. coli in water, is the indicator of sewage pollution. Due to this, when there is a greater number of microbes like E. coli in water, they consume most of the oxygen. It ultimately leads to oxygen deficiency in water.                                       


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