Few reactions of alkanes are given below. The name of the reaction which is not correctly matched with the reaction is:

C H_{3} C H_{2} C H_{2} C H_{3} A l C l_{3} + H C l - ------ \to C H_{3} - C H_{3} | C H - C H_{3} : I s o m e r i s a t i o n

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C_{6} H_{14} 773 K - -- \to C_{4} H_{8} + C_{2} H_{6} : P y r o l y s i s

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C H_{4} + 2 O_{2} Δ - \to C O_{2} + 2 H_{2} O : C o n t r o l l e d o x i d a t i o n

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C H_{4} + H N O_{3} 400^{O} C - --- \to C H_{3} N O_{2} : N i t r a t i o n

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Solution

The correct option is B $C H_{4} + 2 O_{2} Δ - \to C O_{2} + 2 H_{2} O : C o n t r o l l e d o x i d a t i o n$
(A): Isomerisation is a reaction where one organic compound (n-butane) converts to another compound (2-methylpropane) with the same molecular mass but different structures
(B): Pyrolysis is breaking down of a larger hydrocarbon (Hexane) through the application of heat to simpler hydrocarbons (Butane and Ethane) in absence of oxygen.
(C): $C H_{4} + 2 O_{2} △ - \to C O_{2} + 2 H_{2} O$
The above reaction is complete oxidation or combustion of alkanes.
In controlled oxidation reaction, the products formed are formaldehyde and water.
$C H_{4} + O_{2} ⟶ H C H O + H_{2} O$
Hence, (C) is not correctly named.
(D): Addition of $- N O_{2}$ group to a compound is called nitration.

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A, B

C

C l_{2}

C H_{4}

$C H_{4}$ and $C_{2} H_{6}$ form a homologous series, they differ by:

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