Opening bell: Nifty surpasses 21,800, Sensex gains 500 points.
Opening bell: Indian market indices opened substantially higher on Friday, a day after the federal government signaled its intention to pursue budget austerity even as the general elections approached. In addition, strong indications from other Asian counterparts boosted stocks in India. At the opening bell, the Sensex was at 72,189.10 points, up 543.80 points or…