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प्रश्न
What are the three methods of removing germs from natural water? Explain.
उत्तर
Three methods to remove germs :
1. By boiling: Boiling kills germs present in water.
2. Adding potassium permanganate: By adding potassium permanganate in the well the germs can be killed.
3. Chlorination: After filtration water is passed through chlorination tank here chlorine kills the germs.
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संबंधित प्रश्न
Explain how groundwater is recharged.
Make a sketch showing groundwater and water table. Label it.
Answer the following questions in short:
What is water table?
How mist is formed?
Define:
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Name the steps involved in the purification of drinking water supplied in cities and towns
What is the taste of distilled water? Why is it not potable?
Fill in the blank.
__________ is the chemical added to water to remove the tiny suspended particles.
Complete the statement by filling in the blanks with the correct words.
________ is the purest form of water. It may dissolve gases like ________forming weak acids.
(sea water/ lake water/rain water ; chlorine/ammonia/carbon dioxide)
State whether the following statement is true or false. If false, write the correct statement.
Sea water contains salts of calcium and magnesium.
