The Indian equity benchmarks gained for third session in a row on Tuesday as investors placed bullish bets on index heavyweights like Reliance Industries, Tata Consultancy Services, HDFC, ICICI Bank, State Bank of India and HDFC Bank. The Sensex rose as much as 754 points and Nifty 50 index moved above its important psychological level of 17,800. The markets have begun 2022 on a strong note on hopes of reforms in the upcoming Union Budget to spur the economic recovery at a faster pace which has been impacted by the ongoing Covid-19 pandemic, analysts said.