The Air (Prevention and Control of Pollution) Act was amended in $1987$ to include which of the following among pollutants?

What efforts were made to reduce air pollution caused by vehicles in Delhi? Has the air quality in Delhi improved?

Consider the following statements about a scrubber:
$I.$ It is used to remove gases like sulphur dioxide from industrial exhaust.
$II.$ In a scrubber,the exhaust is passed through a spray of water or lime.
$III.$ Water dissolves gases and lime reacts with sulphur dioxide to form a precipitate of calcium sulphate or calcium sulphide.
Which of the statements given above are correct?

Photochemical smog is related to the pollution of

Air pollution is controlled by:

How can pollutants produced from vehicles be reduced?