Question

List two advantages of the use of unleaded petrol in automobiles as fuel. [1]

Answer 1

Advantages of using unleaded petrol as fuel in automobiles are:
(i) Pollution caused by unleaded petrol is less as it does not release lead compounds from exhaust fumes into the atmosphere. [0.5]
(ii) Allows catalytic converter to remain active as the lead in leaded petrol inactivates the catalyst in the converter. [0.5]