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Which of the following is not a method of dealkylation using microorganisms?

(a) Adsorption

(b) Chemical precipitation

(c) Microbial demethylations

(d) Reverse osmosis

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Question is from Microbial Transformations of Pesticides in division Microbial Transformations of Pesticides of Environmental Biotechnology

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Right choice is (c) Microbial demethylations

Easiest explanation: Microbial demethylations is a process which is used for de-alkylation using microorganisms like fungi and bacteria using the process of oxidation. Whereas, adsorption, chemical precipitation, reverse osmosis and solvent extraction is used for heavy metal removal from water and it does not help in method of dealkylation using microorganisms.

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