बिहार में खादर मिट्टी की प्रमुख फसल है - Khadar is the main soil crop in Bihar. - Bihar Me Khadar Mitti Ki Pramukh Fasal Hai Bihar Gk in hindi, Land and Soil Jute , Gehun , Ganna , Kapas question answers in hindi pdf Kapas , Jute , Coffee , Rubber questions in hindi, Know About Dhan , Gehun , Ganna , Tobacco Bihar Gk online test Bihar Gk notes in hindi quiz book Dhan , Gehun , Ganna , Jute