Hellow guys, Welcome to my website, and you are watching UPSC | Highest Scorer | Strategy For PSIR Optional with Notes | By Utkarsh Dwivedi, Rank 5 CSE 2021. and this vIdeo is uploaded by Delhi Knowledge Track at 2022-09-22T08:00:37-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.