The Sensex at the Bombay Stock exchange plunged 298 points, or 1.8 percent, to 16,030, on Wednesday, pulled down by a falling rupee and sliding global markets, amid growing euro zone worries. During the session, the Sensex had slipped below the key 16,000 level. The Nifty at the National Stock Exchange fell 85 points, or 1.7 percent, to 4,858. Stock markets in Japan, China, Hong Kong, Singapore and South Korea posted significant losses of between 1 percent and 3.2 percent.