Question

The characteristic chemical reaction shown by alkanes is :

• A. substitution reaction
• B. addition reaction
• C. subtraction reaction
• D. none of these

Answer 1

The correct option is A substitution reaction

The characteristic chemical reaction shown by alkanes is a substitution reaction. The H atom of alkanes is substituted with some other atom.

For example, when methane reacts with chlorine in presence of UV rays, it gives methyl chloride. H is replaced with Cl.

$C{H}_4+C{l}_2\stackrel{\text{U . V rays}}{\to }C{H}_{3}Cl+HCl$

As alkane does not contain any double or triple bond so they do not undergo additional reactions.

Option A is correct.