The disinfection efficiency of chlorine increases by (i) Decreasing th – McqOptions

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1.	The disinfection efficiency of chlorine increases by (i) Decreasing the time of contact (ii) Decreasing the temperature of water (iii) Increasing the temperature of water%!
A.	Only (i)
B.	Both (i) and (ii)
C.	Both (i) and (iii)
D.	Only (iii)
Answer» E.

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