AIPMT 2014 Physics and Chemistry Paper

In the above compound 1,3-Dimethylbenzene, sites for the attacking electrophile are
attack of electrophile on sites ⓑ& ⓒ results in same compound as product.
Although tendency of electrophile to attack on site ⓐ is very less due to high steric hinderance so respective product is favoured with very very less amount.