बिहार में राजेन्द्र सेतु का निर्माण कब हुआ था ? - When was Rajendra Setu built in Bihar? - Bihar Me Rajendra Setu Ka Nirmann Kab Hua Tha ? Bihar Gk in hindi, Government Schemes 1975 Me question answers in hindi pdf 1980 Me questions in hindi, Know About 1960 Me Bihar Gk online test Bihar Gk notes in hindi quiz book 1995 Me