If they petrol you're referring to includes things such as the butane in lighters and the propane used in some grills, the gas is liquefied under pressure.
As pressure increases, so do the boiling points of most substances. Under normal pressure, propane and butane have boiling points below room temperature and are therefore normally gasses.
At higher pressure the boiling points are above room temperature and so they are liquids.
Petrol Diesel & Liquefied Petroleum Gas
There are cars that run on diesel, CNG (Compressed Natural Gas), LPG (Liquefied Petroleum Gas) and electric power.
because that's what it is?Liquefied Petroleum Gas = LPG
gas
LPG (liquefied petroleum gas) is a mixture of propane and butane, while petrol (gasoline) is a refined fuel derived from crude oil. LPG is stored and transported as a liquid but used as a gas, while petrol is used as a liquid fuel in vehicles. LPG generally burns cleaner than petrol, producing fewer emissions.
LPG: Liquefied Petroleum Gas CNG: Compressed Natural Gas
by compressing it
petrol is gas : )
NGL is not liquefied natural gas, which is condensed natural gas that is compact and therefore convenient for overseas shipping.
Helium.
You cool it down.
Yes.