Pharma shares extended losses after the government's ban on combination drugs.
Investors remain cautious ahead of F&O expiry.
Index heavyweight RIL surged 3% to end above Rs 1,000 mark while IT majors were also the top gainers.
Though the current National Democratic Alliance government has not endorsed the figure, it has not even repudiated it.
The Mukesh Ambani-led Reliance Industries Ltd (RIL) might take a write-down on the KG-D6 block.
According to Merrill Lynch (BofA-ML) report, Domestic capital markets are likely to remain volatile in the September-November period due to factors like US Fed's policy action, second quarter corporate earnings and Bihar state elections.