Kunal Yadav AIR -185 (CSE -2020). Will share answer copies, learnings, strategy, etc. Special focus will be on ESSAY and PSIR optional in which I have scored better. OPTIONAL - PSIR This optional needs no introduction to be honest and is one of the most popular one amongst candidates. Personally I felt interested after reading it for a few days. Being a Chemistry Hons. graduate I was looking for a non- science optional and few well wishers proposed PSIR. I was told it would overlap with GS-2 and help in ESSAY as well as ETHICS. It is true to an extent but not as much as one would expect. So few criterias in descending order of importance for opting of optional can be :- 1. Choose a subject which interests you or something you liked during your school days. It can be anything ranging from history, Geography or maybe polity. 2. Interest need not be deep as such but enough long lasting so that you can read the subject again and again. 3. If all subjects are same to...