Benchmark indices Sensex and Nifty closed lower on Tuesday after a volatile session, marking the eighth consecutive session of southward movement due to relentless foreign fund outflows and caution ahead of the RBI's interest rate decision.Photograph: Hemanshi Kamani/ReutersGiving up early gains, the 30-share BSE Sensex declined 97.32 points or 0.12 per cent to settle at 80,267.62.During the day, it hit a high of 80,677.82 and a low of 80,201.15. In eight trading days, the Sensex has tanked 2,746.34 points ...