Wiping out all its early gains, the Sensex at the Bombay Stock Exchange declined 220 points, or 1.3 percent, to close below the 17,000 level, at 16,840, on Friday, on rate hike worries, and uncertainity about global economic recovery. The Nifty at the National Stock Exchange fell 65 points, or 1.3 percent, to 5,073. Stock markets in Japan, China, Hong Kong, Singapore, and South Korea again ended mixed.