The correct answer is 1974.The Central Pollution Control Board was set up by the government in the year 1974.The Central Pollution Control Board (CPCB) of India is a statutory organization under the Ministry of Environment, Forest and Climate Change (Mo.E.F.C.C.). It was established in 1974 under the Water (Prevention and Control of Pollution) Act, 1974. The CPCB is also entrusted with the powers and functions under the Air (Prevention and Control of Pollution) Act, 1981.The board has approximately 500 full-time employees.It Coordinates the activities of the State Pollution Control Boards by providing technical assistance and guidance and also resolves disputes among them.It is the apex organization in the country in the field of pollution control, as a technical wing of MoEFCC.