Read the following statements regarding drinking water parameters as per Indian Standards and choose the correct option. 1. When protection against viral infection is required, free residual chlorine should be a minimum of 0.5 mg/l in drinking water. 2. The permissible limit of sulphate (as SO42-) in the absence of an alternate source may be extended up to 400 mg/l.

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Computer · Environmental Engineering

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Both statements are correct.

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Answer 1

Both statements are correct.

Answer 2

Both statements are incorrect.

Answer 3

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