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Water pollution, BOD and COD
JEE Main level
Single correct option
Difficulty 2 of 3
ev130
According to the international standards table used in the standard NCERT treatment, the permissible pH range of drinking water is:
A
10.5 to 13.5
B
1.0 to 4.0
C
6.0 to 6.5 only
D
5.5 to 9.5
Answer: D
The permissible pH range for drinking water in the standard table is 5.5 to 9.5. Very acidic or very alkaline water is unfit for drinking.
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