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Environmental Chemistry

Question

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Why is COD preferred over BOD?

Solution

BOD (biochemical oxygen demand) takes a number of days, e.g. BOD₅takes 5 days whereas COD can be determined in a very short time.

Some More Questions From Environmental Chemistry Chapter

In what regions of the atmosphere, the temperature increases with altitude and in which regions it decreases?

What is the size range of particulates?

How particulates help in the cloud formation?

Name three gases which are major air pollutants.

What are primary and secondary pollutants of the air?

Which zone is called ionosphere?

Give one harmful effect of classical smog.

What is PAN?

Name the components of photochemical smog which cause irritation of eyes.

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