On Tuesday, the benchmark indices were trading lower with the Sensex down around 64 points or 0.1% at 71,252 while the Nifty-50 down around 28 points or 0.13% at 21,391. About 1,788 shares have advanced, 1,711 declined, and 174 are unchanged on the BSE. Top gainers and losers on the BSE Sensex index are as …