Question

Why is it necessary to remove sulphur from petroleum products?
a. To reduce the emission of sulphur dioxide in exhaust fumes
b. To increase efficiency of automobiles engines
c. To use sulphur removed from petroleum for commercial purposes
d. To increase the life span of engine silencers


NCERT Class XII
Biology - Main Course Book

Chapter 16. Environmental Issues

Answer 1

it is option a in your question

Answer 2

To reduce the emission of sulphur dioxide in exhaust fumes