Question

define octane ? not octane number just define octane?

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Answer 1

octane comprises of 8 carbon atom with single bond and rest valency satisfied by hydrogen it is an alkane

Answer 2

Answer:

Octane is a hydrocarbon and an alkane with the chemical formula C8H18, and the condensed structural formula CH3(CH2)6CH3. Octane has many structural isomers that differ by the amount and location of branching in the carbon chain. One of these isomers, 2,2,4-trimethylpentane (isooctane) is used as one of the standard values in the octane rating scale.