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What do you mean by green chemistry? How will it help in decreasing environmental pollution?

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It is a production process that aims at using the existing knowledge and principles of chemistry for developing and implanting chemical products and processes to reduce the use and generation of substances hazardous to the environment. The release of different harmful chemicals (particulates, gases, organic and inorganic wastes) causes environmental pollution. In green chemistry, the reactants to be used in chemical reactions are chosen in such way that the yield of the end products is up to 100%. This prevents or limits chemical pollutants from being introduced in to the environment For example, through the efforts of green chemists, H2O2 has replaced tetrachloro methane and chlorine gas in drying and bleaching of paper. CO2 has replaced CFCs as blowing agents in manufacture of polystyrene foam sheet.

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