बिहार की वर्तमान सीमा व क्षेत्र बिहार को कब प्राप्त हुआ ? - When did Bihar get the present boundary and area of Bihar? - Bihar Ki Vartman Seema Wa Shetra Bihar Ko Kab Prapt Hua ? Bihar Gk in hindi, General Studies 1 March , 1951 question answers in hindi pdf 15 November , 2000 questions in hindi, Know About 1 April , 1956 Bihar Gk online test Bihar Gk notes in hindi quiz book 1 May , 1956