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

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.

Green Chemistry: It is the way of thinking and is about utilizing the existing knowledge and principles of chemistry and other services to reduce the adverse effect of pollutants. 

1. Avoiding use of organic solvents such as benzene, toluene, CCl₄ etc., which are highly toxic, we can save our environment. 

2. Use of CO₂ instead of CFC’s for thermocol can reduce pollution or depletion of ozone layer.