With reference to the Himalayan rivers Joining the Ganga downstream of Prayagraj from West to East, which one of the following sequences is correct ?

1. A. Ghaghara – Gomati – Gandak – Kosi
2. B. Gomati – Ghaghara – Gandak – Kosi
3. C. Ghaghara – Gomati – Kosi – Gandak
4. D. Gomati – Ghaghara – Kosi – Gandak

Answer: B

Explanation

The correct sequence of Himalayan rivers joining the Ganga downstream of Prayagraj from West to East is Gomati, Ghaghara, Gandak, and Kosi. The Gomati River joins the Ganga near Varanasi. The Ghaghara River joins the Ganga at Chhapra. The Gandak River meets the Ganga at Sonpur near Patna. The Kosi River, known for its frequent changes in course, joins the Ganga in the Katihar district of Bihar, further to the east. This question requires precise geographical knowledge of the Indian river systems, a fundamental topic in Indian Geography for the UPSC exam.