Bihar Gk Bihar Ki Kis Nadi Se Badh Ka Khatra Sarwaadhik Rehta Hai ?

बिहार की किस नदी से बाढ़ का खतरा सर्वाधिक रहता है ? - Which river of Bihar is most prone to floods? - Bihar Ki Kis Nadi Se Badh Ka Khatra Sarwaadhik Rehta Hai ? Bihar Gk in hindi,  Canals and Irrigation Kosi question answers in hindi pdf  Ghaghra questions in hindi, Know About Baagmati Bihar Gk online test Bihar Gk notes in hindi quiz book    Gandak