Tracking a firming trend in the precious metals overseas, silver prices soared by Rs.101 to Rs 41,824 per kg in futures trade today as speculators widened their bets. In futures trading on the Multi Commodity Exchange, silver for delivery in far-month March next year contracts shot up by Rs.101 or 0.24 percent to Rs 41,824 per kg in a business turnover of 2 lots.