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Question

Which of the following is not an example of green chemistry?


A

Calalytic dehydrogenation of the diethanol amine without using cyanide and formaldehyde

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B

Replacement of CFC's by CO2 as blowing agent in the manufacture of polystyrene from sheets

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C

Reacting methylamine and phosgene to produce methyl isocyanate

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D

Replacement of organotins by 'sea-nine' as antifouling compounds in sea marine.

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