The index has strong support in the zone of 11,180-11,230 as it has an unfilled upside gap (11,180-11,227) which was formed on March 12 and also 50 per cent retracement of the rise from February's low to April's high is placed in the region. In any case, if it falls below this level, Nifty may test 11,000 very fast. Stocks in news: Reliance Industries, Edelweiss Financial Services, Welspun Corp.