Which one of the following is extensively used for sterilizing water ?
1). Bleaching powder
2). Alum
3). Borax powder
4). Soda powder
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1. Kidney stones are composed of ______.
3. Question 7.40:List the uses of Neon and argon gases.
4. Which of the following chemicals is used in photography ?
5. Which is not an anasthetic agent in surgical operations?
6. Which one of the following is used as a sowing agent in the preparation of soft drinks?
8. Which one of the following is extensively used for sterilizing water ?