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COD values are always _________ BOD.

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in Applied Chemistry by (101k points)
COD values are always _________ BOD.

(a) Less than

(b) Higher than

(c) Equal

(d) Nearly equal

I had been asked this question by my school principal while I was bunking the class.

My question is based upon Reverse Osmosis, Ultrafilteration, COD and BOD in chapter Water of Applied Chemistry

1 Answer

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Best answer
Right choice is (b) Higher than

Explanation: COD values are always greater than that of the BOD values because the organic and the biologically oxidisable materials are oxidised in COD.

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