Indian indices started on a cautious note ahead of RBI policy review and pessimistic global cues. Benchmarks witnessed a choppy session but subsequently lost ground in noon trades as RBI disappointed street by keeping the rates unchanged. Sentiments dampened further as RBI revised downward its FY14 GDP forecast to 5.5% from 5.7%. Sensex sank 245 points and Nifty slumped 77 points. Among BSE sectorials, Oil & Gas sector was the top loser followed by Realty.