Explanation:

Only statements 1&3 are correct.

• The National Clean Air Programme (NCAP), launched by the Ministry of Environment, Forest and Climate Change, aims to improve air quality through collaboration with various ministries and states. It aims to achieve a reduction of up to 40% in Particulate Matter 10 (PM 10) concentrations or meet the National Ambient Air Quality Standards by 2025-26.

• The Central Pollution Control Board (CPCB) revised the National Ambient Air Quality Standards (NAAQS) in 2009 under the Air (Prevention & Control of Pollution) Act, 1981, to ensure consistent air quality across India, incorporating 12 health-based parameters for monitoring, sampling, and data analysis using standardized methods. 

• National Ambient Air Quality Standards (NAAQS) set permissible limits for pollutants, including PM 10 (60 µg/m³ annual, 100 µg/m³ 24-hour), PM 2.5 (40 µg/m³ annual, 60 µg/m³ 24-hour), NO2 (40 µg/m³ annual, 80 µg/m³ 24-hour), SO2 (50 µg/m³ annual, 80 µg/m³ 24-hour), CO, O3, NH3, and Pb.

• The Environmental Protection Agency (EPA) calculates the AQI based on eight pollutants: PM 10, PM 2.5, Nitrogen Dioxide (NO2), Sulphur Dioxide (SO2), Carbon Monoxide (CO), Ozone (O3), Ammonia (NH3), and Lead (Pb). 

Hence option 3rd is correct.