Which of the following is not an example of green chemistry? (AIIMS 2009) (a) Reacting methylami...

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Which of the following is not an example of green chemistry?
(AIIMS 2009)
(a) Reacting methylamine and phosgene to produce methyl isocyanate.
(b) Replacement of \( \mathrm{CFCs} \) by \( \mathrm{CO}_{2} \) as blowing agent in the manufacture of polystyrene foam sheets.
(c) Catalytic dehydrogenation of the diethanol amine without using cyanide and formaldehyde.
(d) Replacement of organotins by 'sea-nine' as antifouling compound in sea marines.
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