The 30-share barometer, which had gained 11.84 points in yesterday's volatile session, fell by 77.45 points, or 0.40 per cent, to 19,363.62, with stocks of realty, consumer durables, metal, banking and auto sectors succumbing to selling pressure.
Similarly, the wide-based National Stock Exchange index Nifty declined by 24.80 points, or 0.42 per cent, to 5,853.20.
Brokers said selling by participants, triggered by a weakening rupee which plunged to fresh record low of 58.35 against the dollar in early trade today, heightening inflation worries and a weak trend on Asian bourses following overnight weakness on the US market, dampened the sentiment here.