Hello

A B.Sc. (Bachelor of Science) degree in India is of 3 years duration.

B.Sc. Duration : 3 years (6 semesters)

Under NEP 2020 (New Education Policy):

Some universities have begun shifting to a 4 year structure with options  to Continue for the 4th year for Honours or Research specialization

At Mewar Girls College (Affiliated to MLSU):

B.Sc. is a 3 year undergraduate program.