Markets open lower; Ambuja Cements, BPCL, RIL, ONGC up

Markets open lower; Ambuja Cements, BPCL, RIL, ONGC up<br /><br />Subscribe to www.youtube.com/etnow to get latest business news, analysis and updates.<br />OR <br />Follow us on www.dailymotion.com/etnow to get latest video updates