@erankitjain You can find the 610GS2031 security with the name “GOI LOAN 6.10% 2031”. We have used custom symbol name for underlying securities so that nomenclature discrepancy does not affect the users. Nomenclature logics change at exchange level which brings in confusion. Just type “GOI LOAN” on the search bar and you will get all the Government Securities listed.
Secondly, there do exist futures and options of some of these government securities and they are collectively classified as “Interest Rate Futures” (this is hardly known as this segment has very low liquidity)