Methods to Purify Water
Methods to Purify Water
Different Methods are used to make water safe for drinking.
1. By Boiling: Water can be boiled for few minutes, to kill the germs present in it.
2. By Filtration: Water can be passed through candle filters made of porcelain. Most of the bacteria are trapped in this way.
3. By exposing water to UV Rays: An ultraviolet (UV) filter is fitted directly to the tap. Water from the tap passes through this filter. Ultraviolet light act on the water and kills the germs.
4. By Treating with Chemicals: Potassium permanganate are put into the water. Potassium permanganate is a germicide. It kills the germs.
5. If large amount of fluoride salt is present in water it is treated by lime. Excess fluoride in water causes defects in bones.
Municipal authorities remove all harmful constituents and make water safe for use before supplying to towns and cities. Chlorination is done by adding chlorine tablets or bleaching powder to the water. It kills disease germs.
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| Right Option : C | |||
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Choose the incorrect matched statement: | |||
| Right Option : B | |||
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Which of the following is used to clean water in modern filters? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
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Eshan Arora
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Archit Segal
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Shivam Rana
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
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10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
