Classify the types of chemical reactions that alkenes undergo and provide examples for each.

(N/A) Alkenes primarily undergo the following types of chemical reactions:
$1$. $\text{Electrophilic addition reactions}$:
$(i)$ $\text{Hydrogenation}$
$(ii)$ $\text{Halogenation}$
$(iii)$ $\text{Hydrohalogenation}$
$(iv)$ $\text{Markovnikov addition}$
$(v)$ $\text{Acidic hydration}$
$2$. $\text{Free radical substitution reactions}$:
$(i)$ $\text{Hydrohalogenation in the presence of peroxide (Anti-Markovnikov addition)}$
$3$. $\text{Oxidation reactions}$:
$(i)$ $\text{Reaction with } KMnO_4$
$(ii)$ $\text{Ozonolysis}$