Benchmark Sensex climbed 446 points on Thursday, extending gains for the second consecutive day on buying in oil & gas and select financial shares and fresh foreign fund inflows.Photograph: ANI PhotoThe 30-share BSE Sensex jumped 446.21 points or 0.52 per cent to settle at 85,632.68.During the day, it surged 615.23 points or 0.72 per cent to hit a 52-week high of 85,801.70.The 50-share NSE Nifty also hit its 52-week high of 26,246.65 during the day before closing at 26,192.15, reflecting gains of 139.50 poi ...