There are a total of 9 descriptive type papers given in the IAS Mains which are as follows:
2 lanuguage papers – Paper A (Compulsory Indian Language) and Paper B (English) which are qualifying in nature.
1 Essay paper for which the candidate are required to write 2 essays.
4 General Studies Papers, i.e., GS Paper I, II, III and IV.
2 Optional Papers for which the candidate is required to select an optional subject.