Can I do Bachelors in art and design after completing my B.Sc?

Yes, you can do Bachelors in art and design after B.Sc but you won't be getting many options in colleges as most of the college keep their admission criteria including eligibility regarding age or the year of passing intermediate.

Hi, Yes, you can do that on the bases of your 12th. And also, you need to go through a entrance examination.