where can we get the list of acceptable liquid collaterals those which gives periodic returns with near to zero price fluctuation ....
Look for g-secs. They have 0 price fluctuation and semi-annual interest payout.
Return of gsec is fixed when bond is purchased.
One can buy from secondary MKT, or bid in auction from Z coin or even use rbi portal.
Check with broker as to what they accept too.
If bond is acquired through coin, it may take some weeks before they are accepted for pledging.