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Social & Preventive Medicine Environment and health 908e012f

Minimum recommended concentration of free chlorine drinking water at the end of 1 hour is -

A

0.5 mg/L

B

0.1 mg/L

C

1.0 mg/L

D

1.5 mg/L

High-Yield Explanation

The minimum recommended level of residual chlorine is 0.5 mg/L. Park's Textbook of Preventive and Social Medicine, 25th edition, Page No. 774

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