NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES

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Which of the following minimum percentage of impurities by domestic sewage make the water unfit for human use?

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Correct option: C

0.1

Option C (0.1) is correct because even a small percentage (0.1%) of impurities from domestic sewage can render water unfit for human use due to the presence of pathogens and pollutants.

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