Hey,
Yes,you can pursue Bachelor of Science in Chemistry.
There are various colleges across India that offer this course for instance, Hindu College,Hansraj College,Sri Venkateswara College,Daulat Ram,Calcutta University,St.Xaviers College Mumbai etcetera.
The admission to this course are either through merit or entrance test depending upon the college.
The minimum eligibility criteria is to pass 12th in Science stream with Mathematics(However,some colleges allow candidates without Maths also).
After B.Sc in Chemistry you can go for higher studies as well.
Hope this helps.
Good luck.

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