Question

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

B. \[{C_6}{H_{14}}\xrightarrow{{773K}}{C_4}{H_8} + {C_2}{H_6}:{\text{Pyrolysis}}\]
C. \[C{H_4} + {20_2}\xrightarrow{\Delta }C{O_2} + 2{H_2}O:{\text{ Controlled oxidation}}\]
D. $CH_{4}$ + $HNO_{3}$ $\xrightarrow{{400^{o}C}}$ $CH_{3}NO_{2}$ $Nitration$

Answer 1

Hint: Organic chemistry is a branch of chemistry that deals with study of structures, reactions, properties , preparations, composition of various carbon containing compounds.
Isomerization, pyrolysis, controlled oxidation and nitration are a few reactions to names that are studied in organic chemistry.

Complete answer:
Isomerization :- It is a phenomenon or reaction in which two or more compounds have the same mole aver formula, known as isomers .
In option A, $n - $Butane is getting converted into $2 - $methyl prone. Both the compounds have the same molecular formula but different structures. Therefore, they are undergoing isomerization.

Pyrolysis :- The breaking down of hydrocarbon chains into simpler hydrocarbons by applying heat is known as pyrolysis In option B, Hexone is broken down into Butane and ethane. Therefore it is showing pyrolysis.

Controlled oxidation :-
Controlled oxidation is a process in which during storage, the chemicals are stored with roble gas.
The products of controlled oxidation are formaldehyde and water.
But, in option (C), the products formed are carbon dioxide and water :-
$C{H_4} + 2{O_2}\xrightarrow{\Delta }C{O_2} + 2{H_2}O$
This reaction is representing complete oxidation.
Actual reaction of controlled oxidation would be
$C{H_4} + {O_2} \to HCHO + {H_2}O\;({\text{fomaldehyole}})$
(D) Nitration :- The addition of nitro groups in the presence of nitric acid on a compound is known as nitration.
In option D, nitro $\left( { - N{O_2}} \right)$ group is being added on methane in presence of $HN{O_3}$. Therefore, it is a nitration reaction.

Hence, the correct option is (C). \[C{H_4} + {20_2}\xrightarrow{\Delta }C{O_2} + 2{H_2}O:{\text{ Controlled oxidation}}\]

Note: All the reaction have fixed specific temperature of a reaction always remain the same, only the number of elements in the compounds may differ