Explanation
Higher the octane number better is the fuel. Thus , among the given 81 is the octane number of best fuel.
Antiknocking compounds are the chemicals which reduce knocking for improving the quality of gasoline . example:- Tetra ethyl lead (TEL)
Petrochemicals can be used to prepare synthetic fibres, pesticides and plastics etc.
Green oil is obtained at 270-360o C by distillation of coaltar . It mainly has anthracene and phenanthrene.
LPG contains mainly Butane.
Tetraethyl Lead (C2 H5)4 Pb is used as an antiknock compound in gasoline.
In laboratory burners , oil gas is generally used oil gas is mixture of CH4 + CO + CO2 + H2
Natural gas is a mixture of gaseous hydrocarbons Methane (85%) is its main constituent.
Formula of Cycloalkane is Cn H2n
Cycloalkanes are isomeric with alkenes ,because they have same general formula CnH2n but possessing different structures, shows ring chain isomerism.
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