The Sensex at the Bombay Stock Exchange rose a modest 22 points, or 0.1 percent, to close at 19,246, on wednesday, as investors awaited the outcome of the two-day meeting of the US central bank. The Nifty at the National Stock Exchange rose 9 points, or 0.2 percent, to 5,822.But stock markets in China, Hong Kong, South Korea and Singapore declined between 0.5 percent and 1 percent.