Question

Steps taken by the government of India to control air pollution includes
(a)permission to use only pure diesel with a maximum of 500 ppm sulfur as fuel for vehicles
(b)use of non-polluting compressed natural gas (CNG) only as fuel by all buses and trucks
(c)compulsory PUC (Pollution under control) certification of petrol-driven vehicles which tests for carbon monoxide and hydrocarbons
(d)Both B and C

Answer 1

Hint: By filtration or by absorption by activated charcoal, such harmful gases causing air pollution may be extracted. Via chemical conversion, such gases can be made chemically inert. It is also possible to regulate emissions at the government level by framing certain laws.

Complete answer:
-Compressed natural gas (CNG) based vehicles are introduced. The government has taken many measures to curb air pollution, and Compulsory PUC (Pollution Under Control) certification is one of the most important.
It is possible to control air pollution by
-A rising cover of forests.
-In order to minimize toxic air pollution, vehicle engines should be upgraded.
-There should be provisions for emissions control in factories.
-Air pollution is a significant risk factor for cardiac disease, stroke, chronic pulmonary obstructive disease, and lung cancer, and it raises the risk of acute respiratory infections and exacerbates asthma. -The Indian government has recently taken some measures in this direction, committing to a 50 % decrease in households using solid fuel for cooking and eliminating subsidies for polluting cooking gas last December to increase access to clean fuel for household cooking.
-Among its many directions to resolve the terrible situation, the National Green Tribunal (NGT) included a ban on industrial activities and the entry of vehicles, lambasted the government of Delhi and civil bodies over the deteriorating air quality in Delhi and neighboring states.
So the correct answer is ‘Both B&C’.

Note: -The building dust was identified late as one of Delhi's main sources of pollution. It may cause health problems, such as asthma, chronic pulmonary obstructive diseases, silicosis, etc. The Delhi government has imposed a ban on building and demolition activities in the midst of the current crisis of air pollution.