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Consider the following statements about ...

Consider the following statements about water pollutants.
(I) Disease causing pollutants are called pathogens
(II) They are bacteria and other organisms that enter water from domestic sewage and animal excreta.
(III) Gastrointestinal diseases are caused by Streptococcus faecalis and Escherichia coli bacteria present in human excreta.
Correct option(s) is`//`are.

A

onlyIII

B

Both II and III

C

Both I and II

D

I, II and III

Text Solution

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The correct Answer is:
D
All of the given statement about pathogens are correct.
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A2Z-ENVIRONMENTAL CHEMISTRY-Section D - Chapter End Test
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  3. Negative soil pollutant is

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  4. Which of the following chemical, harmful to ozone , released by chloro...

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  5. Which of the following statement about sewage treatment is false?

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  6. Oxides of sulphur and nitrogen can be removed by scrubbing with

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  7. Which of the following in not an example of green chemistry?

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  8. Which of the following is the coldest region of atmosphere

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  9. Most hazardous metal pollutant of automobile exhausts is :

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  10. NO and H(2)S both the pollutants of air. NO is H(2)S remover while H(2...

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  11. The region which is greatly affected by air pollution is

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  12. Classical smog occurs in places of :

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  13. Which of the following is not a herbicide?

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  14. Which of the following is not involved in the formation of photochemic...

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  15. Which is not the constituent of photochemical smog?

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  16. DDT is

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  17. Smog can be controlled by

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  18. Domestic waste mostly constitute:

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  19. The gas leaked from a stronge tank of the Union Carbide plant in Bhopa...

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  20. Which is not correct statement for classical smog?

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  21. Which of the following is the primary precursor of photochemical smog?

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