Question

now a day every motor vehicle is subjected to a pollution under control (PUC) test find out why this test is done

Answer 1

now a days every motor vehicle is subjected to a pollution because air pollution is very increased in our environment and it causes us many disease.

Answer 2

Cars or rather vehicles are the major reason for air pollution.

So in order to keep the pollution under control pollution checking is done so that if the vehicle pollutes more than it should do then the vehicle should be changed or rarher abandoned.

Air pollution is the releasing of harmful gases in the atmosphere which is harmful for health of every living beings...