47th B.P.S.C. (Pre) 2005
Rivers belonging to which one of the following groups form the boundary between Bihar and Uttar Pradesh?
aKamla, Son and Baghmati
bBudh Gandak, Kosi and Ganga
cKarmanasa, Gandak and Ghaghara✓ Correct
dNorth Koel, Ajay and Punpun
Explanation
The Karmanasa, Gandak and Ghaghara rivers determine the boundary line between Uttar Pradesh and Bihar. The Karmanasa merges into the Ganga near Chausa of Buxar, the Gandak near Pahleja Ghat (Saran district), and the Ghaghara near Revelganj (Saran district).
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