With reference to the Himalayan rivers joining the Ganga downstream of Prayagraj from West to East, which one of the following sequences is correct?
AGhaghara – Gomati – Gandak – Kosi
BGomati – Ghaghara – Gandak – Kosi
CGhaghara – Gomati – Kosi – Gandak
DGomati – Ghaghara – Kosi – Gandak
Answer & Solution
Correct answer: B. Gomati – Ghaghara – Gandak – Kosi
Answer: B. The correct West-to-East order of tributaries joining the Ganga downstream of Prayagraj is Gomati → Ghaghara → Gandak → Kosi.
Working west to east: GOMATI joins the Ganga near Saidpur in eastern UP (closest to Prayagraj). GHAGHARA (also called Karnali, the largest tributary by volume) joins near Chhapra in Bihar. GANDAK joins near Sonpur opposite Patna. KOSI joins near Kursela in eastern Bihar (closest to the West Bengal border). Sequence: Gomati first, Kosi last.
Source: NCERT Class 11 India: Physical Environment, Ch 3 (Drainage System).
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