Hey Parul, 

Bachelor of Pharmacy is a 4-year undergraduate degree course in medical and health care field. The course includes study about preparing and dispensing drugs.

If you have done diploma in Pharmacy from a recognized university or institution and have scored minimum 50% marks in the qualifying examination then you are eligible for doing B.Pharmacy lateral entry (direct admission to 2nd year of the course ).

For admission.you just have fill the application form for the university  admission to the university can either be based on merit of qualifying examination or entrance exam conducted by the university itself or any state or national level entrance exam. 

Good Luck!