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प्रश्न
Answer in brief:
What is the purpose of adding bleaching powder to water supplied to the town?
उत्तर
Adding bleaching powder to water kills germs and harmful bacteria and viruses present in water.
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संबंधित प्रश्न
Make a sketch showing groundwater and water table. Label it.
Name:
Two underground sources of water.
List three major impurities present in river water.
Name :
Two diseases which spread through impure water.
Answer in brief:
How is chemically pure water obtained in the laboratory?
Tick (√) the correct alternative from the choice given for the following statement:
When the water vapour changes into tiny droplets of water near the ground, it is called
State whether the following statement is true or false. If false, write the correct statement.
Sea water contains salts of calcium and magnesium.
______ water is free from suspended impurities.
The process of collecting and storing rain water is called _____.
What is the source of water in each of the following?
Atmosphere
