जॉइन Examsbookउत्तर : 3. "adding caustic soda"
Harmful bacteria in drinking water cannot be destroyed by5
प्र: Harmful bacteria in drinking water cannot be destroyed by
- 1Chlorinationfalse
- 2boilingfalse
- 3adding caustic sodatrue
- 4ozonisationfalse
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उत्तर : 3. "adding caustic soda"
व्याख्या :
Answer: C) adding caustic soda Explanation: Water containing caustic soda cannot be used for drinking
समान प्रश्न
Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.