Nursing · Community Health Nursing
The standard minimum residual free chlorine concentration that should be available in drinking water after one hour of contact time during chlorination is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.5 g/l
- 21.0 g/l
- 30.5 mg/l✓
- 41.0 mg/l
Correct answer
0.5 mg/l
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