बिहार में 1857 के विद्रोह के नेता अमर सिंह की मृत्यु कब हुई - When did Amar Singh, the leader of the Revolt of 1857 in Bihar died? - Bihar Me 1857 Ke Vidroh Ke Neta Amar Singh Ki Mrityu Kab Hui Bihar Gk in hindi, Bihar Modern History Quiz 5 January , 1860 question answers in hindi pdf 5 March , 1859 questions in hindi, Know About 5 February , 1860 Bihar Gk online test Bihar Gk notes in hindi quiz book 3 January , 1860