Green chemistry is the branch of chemistry which focusses on the design of products and process which can minimize the use and generation of hazardous substances.
As the name suggests, one of its main focus is to reduce the environmental pollution. It focusses on use of renewable sources of energy and raw materials which is environment friendly. It used safe, environmentally benign substances, including solvents, whenever possible which doesn't harm our environment. It tries to avoid the production of waste. The chemical products designed are bio-degradable and hence do not affect our environment in a bad way. Thus it helps in minimizing the pollution to a great extent.