<p>Indian stock markets opened on a weak note on Monday as Sensex tanked 567.62 points to 74,743.44 in early trade, while the Nifty dropped 188.4 points to trade at 22,607.50.</p>
<p>Indian stock markets opened on a weak note on Monday as Sensex tanked 567.62 points to 74,743.44 in early trade, while the Nifty dropped 188.4 points to trade at 22,607.50.</p>