"The universalisation of BS-IV norms will reduce sulphur content of the fuel to 50 ppm and the implementation of BS-V/BS-VI emission norms will further reduce the sulphur content to 10 ppm and will improve the ambient air quality," Environment Minister Prakash Javadekar said in a written reply in Lok Sabha.
Presently, BS-IV norms have been implemented in 63 cities covering 15 states including Delhi and the National Capital Region.
In a reply to another question, Javadekar said that India is ranked fourth in total Greenhouse Gas (GHG) emissions after China, the United States of America and the European Union.
He said that the report acknowledges that India's per capita GHG emissions are only one-third of the global average.