The Sensex at the Bombay Stock Exchange shot up a hefty 351 points, or 1.9 percent, to close above the key 19,000 mark after more than two months, at 19,078, today, amid easing food inflation. The Nifty at the National Stock Exchange spurted 104 points, or 1.9 percent, to 5,729.Stock markets in Japan, China, Hong Kong, South Korea, and Singapore ended mixed.