बिहार के पूर्णिया बेसिन के चार जिलों में किसके द्वारा पेट्रोलियम एवं प्राकृतिक गैस की पूर्वेक्षण अनुज्ञप्ति स्वीकृति की गई है ? - By whom has the prospecting license of petroleum and natural gas been approved in four districts of Purnia basin of Bihar? - Bihar Ke Purniya Basin Ke Char Zilon Me Kiske Dwara Petroleum Aivam Prakritik Gas Ki poorvekshan anugyapti Svikriti Ki Gayi Hai ? Bihar Gk in hindi, Government Schemes Reliance Energy question answers in hindi pdf Tel Aivam Prakritik Gas Corporation questions in hindi, Know About Reliance India Limited Bihar Gk online test Bihar Gk notes in hindi quiz book TATA Energy