Question

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

Answer 1

This type of petrol treated without lead compound. Lead compound is a toxic and harmful compound. Unleaded petrol is available for consumption as a fuel in automobiles.

Complete answer:
There are different types of petrol that a person can buy from the petrol pump. These are: leaded and unleaded petrol. In leaded petrol, a lead compound is present which is toxic and also it causes a lot of pollution and it is also not good for human health. On the other hand, there is unleaded petrol which does not contain any lead compound and also causes less pollution. Unleaded petrol is also not toxic and easily available to the customer whereas the leaded petrol is banned now. Leaded petrol was manufactured to eliminate the anti-knocking property in petrol but later on it was observed that tetraethyl lead had some undesirable side effects and the government discouraged the use of leaded petrol. Then the alternative has found i.e. leaded petrol which does not contain lead compounds. Lead is a heavy pollutant that is not only harmful for the environment but also harmful for the people who come in contact with the lead.
So, the two advantages of using unleaded petrol are:

Unleaded petrol contains no lead compounds, so it causes no pollution in the environment which keeps the environment free from the pollution.
As due to the absence of any lead compound, it is also not harmful and toxic for human beings. The cost is also low as compared to leaded petrol.

Note: Unleaded petrol does not contain any lead compounds so it does not emit harmful gases in the environment and prevents asthma, lung disease etc.