The market suffered sharp declines following the RBI's surprise decision to hike interest rates by 25 basis points, contrary to expectations of a rate cut. The Sensex plunged over 500 points and ended down 1.85% while the Nifty breached 6,000 points. Rate sensitive sectors such as banks, capital goods, and real estate saw major declines. The RBI Governor cited rising inflation for the decision to take a more hawkish stance compared to other central banks like the US Fed.