List two advantages of the use of unleaded petrol in automobiles as fuel.
Advantages of unleaded petrol in automobiles as fuel:
(i) Automobiles equipped with a catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalysts of the converter.
(ii) Use of unleaded petrol prevents the release of poisonous gases (e.g. nitrous oxide) in the environment.
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