PSC (public servive commission) test will include all the subjects that you have studied throughout dentistry right from you r first year. These include-

Human anatomy

Human physiology

Biochemistry

Dental anatomy, physiology, occlusion

Dental histology

Dental materials

Prosthodontics

Microbiology (Oral and General)

Pathology (Oral and General)

Pharmacology (Oral and General)

Forensic dentistry

Orthodontics

Pedodontics

Oral medicine and Radiology

Public Health dentistry

Conservatiove dentistry and Endodontics

Oral Surgery and Anaesthesia

Periodontics