बिहार के किस जिले में अभ्रकमूलक मिट्टी पायी जाती है ? - In which district of Bihar mica-based soil is found? - Bihar Ke Kis Jile Me abhrakmoolak Mitti Payi Jati Hai ? Bihar Gk in hindi, Land and Soil Nalanda question answers in hindi pdf Gaya questions in hindi, Know About Nawada Bihar Gk online test Bihar Gk notes in hindi quiz book Purniya