The Indian stock market rallied on Monday, with Sensex and Nifty jumping nearly 2% each as falling oil prices, strong earnings by heavyweights including Reliance Industries and other factors strengthened the bulls of Dalal Street.Sensex soared 1,233 points to close at 75,693 while Nifty 50 jumped 388 points to close near 23,441 on Monday. The sharp gains added more than Rs 8 lakh crore to the total market capitalisation of all companies listed on BSE, pulling it up above Rs 482 lakh crore.