Indian markets gained amid widespread optimism after RBI announced measures to enhance liquidity & revive growth. The central bank maintained the status quo in its key interest rates while keeping an accommodative stance in the monetary policy review. The BSE Sensex ended at 40,509.49, gaining 326.82 points or 0.81%. The Nifty closed at 11,914.20, adding 79.60 points or 0.67%.