hey deeepika
yes you can do bsc chemistry honours after your +2 or boards . there are several colleges in india which provides bsc chemistry honours . most of them are merit based and some conducts entrance exams . check out the given list of colleges below
https://collegedunia.com/courses/bachelor-of-science-bsc-hons-chemistry-colleges-in-india
best wishes
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile