What is the best option for 50% cash margin required?

[pankushri]

Best Cash Component Securities

So now Zerodha is allowing most of the securities to be pledge which is approved by NSE. Now one can have choice to invest in securities with better returns other then liquid funds. Now Money Market funds ,Gilt Funds and Govt. Secuties are included. Past 5 years avg returns are far better than liquid funds like liquidbees. Please suggest best Securities for Cash Components with higher returns. This became important as now many of the scripts are allowed under cash components.