Question

Given,$C{H_2} = C{H_2} + B{r_2} \to C{H_2}Br - C{H_2}Br$ is an example of
A.Addition reaction
B.Elimination reaction
C.Substitution reaction
D.Molecular arrangement

Answer 1

An addition reaction, in the most basic terminology of organic chemistry, is a chemical process in which two or more reactants combine to produce a larger single product. However, because a double or triple bond is generally broken to create the needed single bonds, only chemical compounds with multiple bond characters may perform an additional reaction.

Complete answer:
There are two categories for polar addition reactions, namely, Addition reactions using electrophiles and Addition reactions involving nucleophiles.
We have two classifications for non-polar addition reactions, namely, additional reactions involving free radicals and Reactions using cycloadditions.
An addition reaction is basically a reverse decomposition reaction, where a decomposition reaction is one in which one or more elements or compounds are compounded. In organic chemistry, an addition reaction is an organic process in which two or more molecules join to produce a bigger one (the adduct). Chemical compounds having numerous bonds, such as molecules with carbon–carbon double bonds (alkenes) or triple bonds, and compounds with rings, which are also called sites of unsaturation, are excluded from additional processes. Addition can occur in molecules with carbon—hetero double bonds, such as carbonyl (C=O) or imine (C=N) groups.
An electrophilic addition reaction is defined as an addition reaction in which the bond of a reactant with many bonds, such as a double or triple bond,$\pi$ is broken and two new$\sigma$ bonds are created.
In $C{H_2} = C{H_2} + B{r_2} \to C{H_2}Br - C{H_2}Br$, double bond is converted to single bond.

Hence option A is correct.

Note:
Electrophilic and nucleophilic addition are the two primary kinds of polar addition processes. Free-radical addition and cycloadditions are two non-polar addition processes that exist. Polymerizations can also include addition processes, which are referred to as addition polymerization. Depending on the structure of the product, it may react quickly to expel a leaving group, resulting in an additional–elimination reaction cascade.