Recently lead free petrol was introduced in our country because

A. they are not needed now as anti-knock agents

B. they cause less pollution

C. they tower the efficiency of the engine

D. to reduce the cost of petrol

Answer: Option B

Solution(By Examveda Team)

Recently lead free petrol was introduced in our country because they cause less pollution. Worldwide studies have revealed that leaded petrol is responsible for 90 per cent of all airborne lead pollution. In India, petrol with a low lead content (0.15 gm/l instead of 0.56 gm/l) was introduced in the four metros in 1994.