The Sensex at the Bombay Stock Exchange surged 232 points, or 1.2 percent, to close at a three-month high of 19,736, today, on buying by funds and expectations of a rate cut by the RBI tomorrow. The Nifty at the National Stock Exchange spurted 69 points, or 1.2 percent, to 5,999.But Stock markets in Japan, China, Hong Kong and South Korea fell between 0.2 percent and 0.8 percent.