Motilal Oswal offers its outlook on the Oil & Gas sector, with its top picks being Hindustan Petroleum Corp., Gail (India) Ltd., and Oil India Ltd. Citi initiated coverage on Trent Ltd., and remains bullish on UltraTech Cement Ltd.NDTV Profit tracks what the brokerages are putting out on stocks and sectors. Here are all the top calls from analysts you need to know about on Thursday.