Yes indeed! The lead compound added to petrol inhibited knocking in the engine under load. The lead also would deposit in tiny amounts on the engine valve shafts, making them tighter in their cylinders, hence reducing oil leakage and smoking. Due to health risks of engine exhausts, other ways were developed to inhibit knocking.
The main chemical compound present in petrol is hydrocarbons, specifically alkanes such as octane (C8H18). These hydrocarbons burn easily to provide energy for engines.
The star rating is no longer used to classify petrol. The star rating was an indication of the percentage of lead present in the fuel. Commercial fuels no longer contain lead.
can content in petrol if not unleaded
Unleaded petrol is petrol that has not been treated with a lead compound.
At its present rate of use it is not.
Perhaps tetra-ethyl lead for petrol, and CFC's. Both invented by the same guy. Maybe the nuclear bomb. Or DDT.
in petrol we have 2 types.they are 1.leaded petrol 2.unleaded petrol in leaded petrol we have lead compounds so we call it as leaded petrol. in unleaded petrol we do not have lead compounds. the use or advantage of unleaded petrol is it does not emit harmful gases in to the environment. but leaded petrol emits harmful gases. cracking process takes place in unleaded petrol. cracking means it is a process of converting harmful gases into harmless gases. but this cracking process cannot be done in leaded petrol bcoz lead compounds decomposes the catylsts used in cracking process
There are no types of gas present in petrol because it is basically a liquid that is used in cars and vehicles. Petrol is the UK term for gasoline.
lead free petrol....
As well as petrol you need oxygen and an ignition source
The beneifits of petrol is that it fuels your car and it lets it go many kilometres. Petrol is also a fossil fuel and will be around for the next hundred of years. Also petrol doesn't contain lead, unlike the earlier types of petrol which contained lead and can damage your heath. the benefit of petrol is that it gives fuel to your car so it can work and drive kilometers and more.
ever increasing.