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In piped water supply system water is of...

In piped water supply system water is often treated with chlorine to

A

remove hardness

B

kill germs

C

increase oxygen level

D

remove algae

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The correct Answer is:
B
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AAKASH SERIES-ENVIRONMENTAL ISSUES-Exercise-I (Water pollution)
  1. The term "Bio-magnification" refers to the

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  2. The step in which organic matter is oxidized with the help of microorg...

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  3. In piped water supply system water is often treated with chlorine to

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  4. Which among the following is likely to have the highest levels DDT de...

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  5. A test procedure based on the chemical decomposition of organic and in...

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  6. High concentrations of accumulated DDT in birds

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  7. Insecticides usually act upon

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  8. Which of the following is called eutrophication ?

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  9. Thermal pollution of water bodies is due to discharge of

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  10. When temperature increases dissolved oxygen of water

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  11. Realizing the importance of maintaining the cleanliness of the water b...

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  12. Ganga action plan for controlling pollutionin Ganges started in

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  13. World.s most problematic aquatic weed is

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  14. Wich of the following causes biomagnifications ?

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  15. The expanded form of DDT is

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  16. The green scum seen in the fresh water bodies is

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  17. Match correctly the following and choose the correct option . {:(" ...

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  18. Which one of the following impurities is easiest to remove form waste ...

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  19. Which one of the following diseases in not due to contamination of wat...

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  20. Nuisance growth of aquatic plants and bloom-forming algae in natural w...

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