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Sewagw containing organic waste when all...

Sewagw containing organic waste when allowed into water bodies A)Helps in the growth of aquatic life B)Increases the amount of dissolved oxygen in water C)Decreases the amount of dissolved oxygen in water D)Helps in killing of bacteria

A

Helps in the grwothe of aquatic life

B

Increase the amount of dissolved oxygen in water

C

Decreases the amount of dissolved oxygen in water

D

Helps in killing of bacteria

Text Solution

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The correct Answer is:
C
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NARAYNA-ENVIRONMENTAL CHEMISTRY-EXCERCISE- I (H.W) (Water pollution)
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  2. Lakes containing excess of bacterial nutrients called

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  3. Beyoond which minimum concentration of F water becomes useless for dr...

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  5. Which of the following is / are proper method to dispose sludge ? A)...

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  6. Which of the following metals is /are toxic and pollutants ? A) Cadm...

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  7. Domestic waste contains

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  8. DDT as pesticide is introduced by which of the following

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  9. DDT is

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  10. Sewagw containing organic waste when allowed into water bodies A)Helps...

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  11. Which one is not corect statement regarding minimizing enviromental po...

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  12. The acceptable level of lead in drinking water in ppm is A)501 B)250 C...

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  13. The maximum prescribed concentration of cadmium in drinking water in p...

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  14. The maximum allowed concentration in ppm of zinc in drinking water

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  15. F^(-) ions make enamel on teeth harder by converting hydroxy apatite i...

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  16. addition of phosphates to water ponds causes eutrophication due to

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  17. Presence of lead in water causes

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  18. DDT can act as

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  19. Carbamates are (A) Nerve toxins (B) Biodegradable (C) Pesticides (...

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  20. Major water pollutants are

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