How to prepare Optional Subjects for UPSC Mains Exam?
- Economics Optional
- Public Administration Optional – IAS Prem Ranjan Singh (Rank 62, CSE 2013)
- PubAd Hidden Topics: Lohit Matani (AIR 182, CSE 2013)
- History Optional
- Psychology Optional Strategy by IAS Ravi Ranjan (AIR 92 CSE 2013)
- Geography Optional by IAS Chanchal Rana (AIR 7, CSE 2013)
- Management Optional – Nagendra Singh (AIR 120, CSE 2013)
- Philosophy Optional – Dinesh Bishnoi (212 marks optional)
- Political Science – by Subject Topper Rajat Sen (255 marks, cse 2013)
- Political Science Optional Preparation – by IAS Himanshu Aggarwal (AIR 28, cse 2013)
- Physics Optional – by Divyanshu Jha (AIR 9, cse 2013)
- Physics, Ethics and Interview – by IAS Manish Bansal (AIR 53, cse 2013)