बिहार में नलकूपों द्वारा सर्वाधिक सिंचाई निम्नलिखित में से किस भाग में होती है ? - In which of the following parts of Bihar is the maximum irrigation done by tube wells? - Bihar Me Nalkoopo Dwara Sarwaadhik Irrigation NimnLikhit Me Se Kis Bhag Me Hoti Hai ? Bihar Gk in hindi, Canals and Irrigation Ganga Ke Dakshinni - Poorvi Bhag question answers in hindi pdf Ganga Ke Dakshinni - Pashchimi Bhag questions in hindi, Know About Uttar - Pashchimi Bhag Bihar Gk online test Bihar Gk notes in hindi quiz book Uparyukt Sabhi