Question

two advantages of the use of unreleased petrol and automobiles as fuel?

Answer 1

Using unleaded petrol as a fuel has more advantages in automobiles. Unleaded petrol is devoid of lead, a substance generally used to prevent engines of vehicles from getting damaged. But lead emmitted form vehicles gets accumulated in the atmosphere and ceuses srious illness in human beings. 
*Unleaded petrol does not emit harmful substances into air.
*Unleaded petrol does not release any corrosive compounds which affect spark plugs and exhaust systems of the vehicles.



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Answer 2

(i) Unleaded petrol does not release lead compounds from exhaust fumes into the atmosphere and causes less pollution.

(ii) It does not emit harmful compounds, it helps in preventing health diseases like bronchitis, asthma and lung diseases.

(iii) It allows catalytic converter to remain active.