Which should retail investors prefer, Nifty 50 ETFs or index funds?

Nifty 50 ETFs and index funds track same benchmark but differ in trading and investment convenience. Investors with demat accounts seeking real-time trading flexibility can choose ETFs, while those with no demat account who prefer easy investing and automated SIPs may choose index funds. Tracking error, expense ratios, fund size and liquidity must be assessed before choosing passive investment.