for CSS aspirants
full form of CSS (central superintendent service)
There are 12 subjects, 6 compulsory, 6 optional.
Compulsory subject
Essay 100
English (Precis and Composition) 100
General Knowledge :
Paper - I General Science & Ability 100
General Science: (MCQs = 20 marks, subjective = 40 marks)
Ability: subjective = 40 marks)
Paper - II Current Affairs 100
Paper - III Pakistan Affairs 100
Islamic Studies or Comparative Study of Major  Religions (For Non-Muslims) 100
The optional subject you should choose to your interest.

Department after clarifying everything
Pakistan Custom Service
Commerce & Trade Group
Foreign Service of Pakistan
Inland Revenue Service of Pakistan
Pakistan administrative service and District Management Group (DMG)
Police Service of Pakistan
Railways (commercial & transport) Group
Information Services of Pakistan
Military land & Cantonment group
Office management and secretariat group.

The first test is screening, if someone passed after he proceeded to further develop, Overall 33% Marks (66/200)
To pass this exam you need to score at least 600 marks, However, your allocation is possible if you score around 650 marks in the written exam and around 180 out of 300 marks in the interview but merit is different for different provinces and each province has a specific quota, there are 3 chances for a specific person.
Thanks for readers