Discuss Markownikoffs rule and Kharasch effect.

Markownikoffs Rule :
In addition reactions, electrophile in the reagent is added to double bond carbon atom which carbon has more number of hydrogens.
It follows electrophilic addition mechanism.
${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2+{\mathrm{H}}^{\oplus }$

Anti Markownikoff's Rule :
In addition reactions, ‘H’ radical in the reagent is added to double bond carbon atom which carbon atom has less number of hydrogens in presence of peroxides.
It follows free radical addition mechanism.
${\mathrm{CH}}_3-\mathrm{CH}={\mathrm{CH}}_2+\dot{\mathrm{Br}}$