It depends on college in which you have applied for. Apart from ur percentage it depends on your subject marks, I. E, pcm marks which u have. 

Hi Abhishek

Bachelor of Science (B.Sc.) or B.S. is one of the most popular academic degree courses among the science students after class 12th . The duration of B.Sc. degree course ranges from 3 years , and yes ou can definetly pursue your b.sc.