बिहार के उत्तरी भाग में 32 किलोमीटर लम्बी रामनगर दून की पहाड़ियाँ है, इसकी चौड़ाई … … … … ..है - In the northern part of Bihar, there are 32 km long Ramnagar Doon hills, its width is ………….. - Bihar Ke Uttari Bhag Me 32 Kilometer Lambi RamNagar Doon Ki Pahadiyaan Hai , Iski Chaudai … … … … ..Hai Bihar Gk in hindi, Geographical Structure 9 - 10 question answers in hindi pdf 8 - 16 Kilometer questions in hindi, Know About 6 - 8 Kilometer Bihar Gk online test Bihar Gk notes in hindi quiz book 10 - 18 Kilometer