CNG stands for Compressed Natural Gas. It is primarily methane stored at high pressure. It is considered a cleaner fuel than petrol or diesel because it produces fewer pollutants like carbon monoxide and unburnt hydrocarbons, and it leaves no residue upon combustion.
Explanation:
Graham's law: r ∝ 1/√M (molar mass). At same T,P, rate inversely proportional to square root of density. Lighter gases diffuse faster. Used in uranium enrichment (UF₆).
Explanation:
Liquids have a definite volume but take the shape of their container. Solids have the least intermolecular space and highest density. Gases have maximum intermolecular space and are highly compressible. This relates directly to the kinetic theory of matter, which describes particle arrangement and movement in different states.
Explanation:
Petroleum gas, also known as natural gas associated with oil deposits, is primarily methane (CH₄) with smaller amounts of ethane, propane, and butane. LPG is propane and butane. Methane is the lightest hydrocarbon. It is separated and used as fuel (CNG) or petrochemical feedstock.
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