Dear Shumaila 

Even though PGIMER, Chandigarh hasn't released its July 2018 session information bulletin yet indicating the seat matrix. However, you can check January 2018 session department wise data from the link given below in order to get an idea of July session's seat matrix. In all probabilities, the department wise seats for July 2018 session will remain same as January 2018 session, with very slight variations (if any). 

Check the Seat matrix of PGIMER Chandigarh from the link below. 

All about PGIMER Department-wise seats and reservation 

I hope it helps. All the best!