Which of the following rivers is the longest right-bank tributary of the Ganga River?

💡 Solution & Explanation

The Yamuna river originates from the Yamunotri glacier and serves as the longest and westernmost right-bank tributary of the Ganga, eventually meeting it at Prayagraj. Other options like the Gomati are left-bank tributaries originating in the plains rather than right-bank Himalayan rivers. Drainage system questions in Indian geography frequently require distinguishing between left-bank and right-bank tributaries.