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Which one of the following statements is...

Which one of the following statements is not correct?

A

`NO_(2)` is a lung irritant

B

The municipal sewage has BOD value of 100.4000 ppm

C

Man source of CO is automoble exhaust fumes

D

COD is the measure of bacteria in water

Text Solution

Verified by Experts

The correct Answer is:
D
In environmental chemistry, chemical oxygen demand (COD) is the total amount of oxygen,(in ppm) that would be consumed by pollutants in a given water sample measured solution. Thus, COD is useful in terms of water quallity.
Hence, option (d) is incorrect while the other given statements are correct, i.e,
Municipal sewage has BOD (Biological oxygen demand ) value of 100 - 4000 ppm.
`NO_(2)` can causes irritation of eyes, noise even lungs,
About 70% CO is mianly from automobiles exhaust fumes. .
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