बिहार में पर्वत पादीय मिट्टी के विस्तार को क्या कहा जाता है ? - What is the extension of mountain foot soil in Bihar called? - Bihar Me Parvat padeey Mitti Ke Vistar Ko Kya Kahaa Jata Hai ? Bihar Gk in hindi, Land and Soil DiyaRa Ka Shetra question answers in hindi pdf bhabar Ka Shetra questions in hindi, Know About Taal Ka Shetra Bihar Gk online test Bihar Gk notes in hindi quiz book Inme Se Koi Nahi