Indian benchmark indices Sensex and Nifty closed flat on Monday, as gains in consumer and oil & gas stocks were offset by losses in financial and IT shares. Investor sentiment remained cautious amid rising uncertainty ahead of the July 9 U.S. tariff deadline, watching for US President Donald Trump’s next move.The BSE Sensex rose 9.61 points, or 0.01%, to end at 83,442.50, while the NSE Nifty advanced 0.30 points to close at 25,461.30.