Bihar Gk Uttari Bihar Me Kis Karan Se NalKoop Dwara Irrigation Adhik Prapt Hoti Hai ?

उत्तरी बिहार में किस कारण से नलकूप द्वारा सिंचाई अधिक प्राप्त होती है ? - Due to which reason more irrigation is obtained through tube wells in North Bihar? - Uttari Bihar Me Kis Karan Se NalKoop Dwara Irrigation Adhik Prapt Hoti Hai ? Bihar Gk in hindi,  Canals and Irrigation Mulayam Mitti Ke Karan question answers in hindi pdf  Saghan Krishi Ke Karan questions in hindi, Know About Adhik Jansankhya Ke Karan Bihar Gk online test Bihar Gk notes in hindi quiz book    Kam Varsha Ke Karan