Join ExamsbookAnswer : 3. "adding caustic soda"
Harmful bacteria in drinking water cannot be destroyed by5
Q: Harmful bacteria in drinking water cannot be destroyed by
- 1Chlorinationfalse
- 2boilingfalse
- 3adding caustic sodatrue
- 4ozonisationfalse
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Answer : 3. "adding caustic soda"
Explanation :
Answer: C) adding caustic soda Explanation: Water containing caustic soda cannot be used for drinking
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