Generally, this term is used for something that would be gaseous under normal ambient temperatures and pressures, but is currently in a liquid state (usually because it's highly compressed or has been cooled.).
because that's what it is?Liquefied Petroleum Gas = LPG
Natural gas can only be liquefied under extreme pressure.
gas
LPG: Liquefied Petroleum Gas CNG: Compressed Natural Gas
by compressing it
NGL is not liquefied natural gas, which is condensed natural gas that is compact and therefore convenient for overseas shipping.
Helium.
Yes.
lowering the temperature
You cool it down.
lowering the temperature
LPG, also known as propane, is liquefied natural gas. Piped natural gas has not been liquefied and remains in a gas form.