Question

The reaction in which a chlorine atom replaces a hydrogen atom in a molecule of methane is called ______________.

• A. an elimination reaction
• B. a substitution reaction
• C. a combustion reaction
• D. an addition reaction

Answer 1

The correct option is B a substitution reaction

Chlorine replaces hydrogen in methane very quickly in the presence of sunlight to give chloromethane. This type of reaction is called substitution reaction.
$C{H}_4+C{l}_2\to C{H}_{3}Cl+HCl$ (in the presence of sunlight)