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Which of the following is an end product formed from both the aerobic and anaerobic decomposition of organic matter?

(a) NO3

(b) CH4

(c) H2S

(d) CO2

I have been asked this question during an internship interview.

The question is from Biological Characteristics of Waste Water in chapter Wastewater Characteristics of Environmental Engineering

1 Answer

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Best answer
The correct choice is (d) CO2

The explanation is: Carbon dioxide is formed due to the oxidation and reduction of organic matter by aerobic and anaerobic bacteria respectively.

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