Why is it necessary to remove sulfur from petroleum products?

1. To reduce the emission of sulfur dioxide in exhaust fumes
2. To increase the efficiency of automobiles engines
3. To use sulfur removal from petroleum for commercial purposes
4. To increase the life span of engine silencers

Ans. (a) Removal of sulfur from petroleum products (diesel) reduces the emission of oxides of sulfur-like S02 and S03 in the exhaust fumes.
Page 271, XII NCERT