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NEET AIPMT SOLVED PAPER 1998

  • question_answer
                Which one of the following organisms is used as indicator of water quality?                            

    A)              Beggiatoa             

    B)              Chlorella                

    C)              Azospirilhan      

    D)              Escherichia

    Correct Answer: D

    Solution :

                    A variety of the enteric group of bacteria (facultative, aerobic) reside in the human large intestine (eg., E. coli). Therefore, their presence in water supply indicates that water supply has been contaminated by sewage.


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