Mumbai: Indian equity markets opened on a positive note on Monday, supported by the revival of the monsoon, renewed foreign institutional investor (FII) buying and softer crude oil prices. The BSE Sensex opened at 77,940.90, up 176.99 points (0.23%), while the NSE Nifty50 started the session at 24,306.85, gaining 36 points (0.15%). Realty, Metal Stocks.