The correct option is B Only 2
The Central Pollution Control Board (CPCB), statutory organisation, was constituted in September, 1974 under the Water (Prevention and Control of Pollution) Act, 1974. Further, CPCB was entrusted with the powers and functions under the Air (Prevention and Control of Pollution) Act, 1981.
The list of environmental standards administered by CPCB is:
National air quality standards
Water quality standards
Vehicular exhaust
Industrial specific standards
Bio Medical incinerators
Noise standards
Generator sets.