Question
What do you mean by green chemistry? How will it help decrease environmental pollution?

Answer

Green chemistry is a way of thinking and is about utilising the existing knowledge and principles of chemistry and other sciences to reduce the adverse effect of pollution.
For example:
  • Automobile engines have been fitted with catalytic converters which prevent the release of the vapours of hydrocarbons and oxides of nitrogen into acrolein and peroxyacetyl nitrate.
  • $\mathrm{CO}_2$ has replaced CFCs as blowing agents in the manufacture of polystyrene foam sheets.

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