Hi Somesh 

D Pharm is a 3 years long Doctoral degree course in which first 2 years are academic year and 1year is for internship.

Eligibility criteria for this course is : 

You have completed your b Pharmacy course from an institute recognised by Pharmacy council of India (PCI) with minimum 50% aggregate marks in course.

Most institutes follow direct admission process . You need to satisfy the above mentioned Eligibility criteria to apply for admission . 

But some deemed universities have their qualifying entrance test. So for admission I those universities you have to pass qualifying entrance test.

All The Best!!