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Fishes die by sewage because...

Fishes die by sewage because

A

Of its bad smell

B

Of its bad smell

C

It increases oxygen competition among fishes

D

`CO_(2)` is mixed in large amount in water

Text Solution

Verified by Experts

The correct Answer is:
C
Sewage has high BOD and COD
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ERRORLESS-ENVIRONMENTAL CHEMISTRY-NCERT BASED QUESTIONS (WATER POLLUTION)
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  2. A dental disease characterised by motting of teeth is due to presence ...

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  3. Fishes die by sewage because

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  4. The high amount of E, coli in water is the

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  5. Biological oxygen demand (BOD) is a measure of

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  6. Black-foot disease is caused due to groundwater contaminated with exce...

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  7. B.O.D. is connected with

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  8. Minimata disease first occurred in

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  9. Sewage containing organic waste should not be disposed in water bodies...

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  10. Limit of BOD prescribed by Central Pollution Control Board for the dis...

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  11. Thermal pollution of water bodies is due to discharge of:

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  12. Biological treatment of water pollution is done with the help of

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  13. Polluted water can be purified by using

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  14. Foul smell in the water of tanks, ponds etc. is due to

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  15. Minamata disease was caused due to the consumption of

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  16. Which of the following plant is used for the purification of water

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  18. Eutrophication is caused by

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  19. Which one of the following is not a bioindicator of water pollution ?

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