Anaerobically treated effluent has MPN of total coliform as 106 /100 ml. After chlorination, the MPN value declines to 10 /100 ml. The per cent removal (%R) and log removal (log R) of total coliform MPN is

Anaerobically treated effluent has MPN of total coliform as 106 /100 m

1.	Anaerobically treated effluent has MPN of total coliform as 106 /100 ml. After chlorination, the MPN value declines to 10 /100 ml. The per cent removal (%R) and log removal (log R) of total coliform MPN is
A.	%R = 99.90; log R = 4
B.	%R = 99.90; log R = 2
C.	%R = 99.99; log R = 4
D.	%R = 99.99; log R = 2
Answer» D. %R = 99.99; log R = 2

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Anaerobically treated effluent has MPN of total coliform as 106 /100 ml. After chlorination, the MPN value declines to 10 /100 ml. The per cent removal (%R) and log removal (log R) of total coliform MPN is

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