अली गौहर ने कब पटना का घेरा डाला था ? - When did Ali Gauhar besieged Patna? - Ali Gauhar ne Kab Patana Ka Ghera Dala Tha ? Bihar Gk in hindi, Bihar Modern History Quiz 1760 Me question answers in hindi pdf 1780 Me questions in hindi, Know About 1803 Me Bihar Gk online test Bihar Gk notes in hindi quiz book 1772 Me