The permissible pH limit of industrial effluent discharges into inland – McqOptions

MCQOPTIONS

1.	The permissible pH limit of industrial effluent discharges into inland surface water as per IS 2490 (1974) is:
A.	10 - 15
B.	5.5 - 9.0
C.	22 - 25
D.	15 - 20
E.	25 - 30
Answer» C. 22 - 25

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