क्षेत्रफल के दृष्टिकोण से बिहार के किस जिले में नलकूप द्वारा न्यूनतम सिंचाई होती है ? - From the point of view of area, which district of Bihar receives minimum irrigation through tube wells? - Shetrafal Ke Drishtikonn Se Bihar Ke Kis Jile Me NalKoop Dwara Nyoontam Irrigation Hoti Hai ? Bihar Gk in hindi, Canals and Irrigation Arwal question answers in hindi pdf Banka questions in hindi, Know About Munger Bihar Gk online test Bihar Gk notes in hindi quiz book ShivHar