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Social & Preventive Medicine General 2d6b18bf

All of the following statements about purification of water are true except

A

Sodium thiosulphate is used to neutralize certain contaminants

B

Coliforms must not be detectable in any 100 ml sample of drinking water

C

Presence of Clostridial spores indicates recent contamination of water

D

Coliforms may be detected by multiple tube method and indole production

High-Yield Explanation

No explanation provided.

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