Which of the following is NOT a tributary of Ganga?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Lohit.
Yamuna – Right-bank tributary of the Ganga, originating from the Yamunotri Glacier in Uttarakhand.
Gandak – Left-bank tributary, originating from Nepal and joining the Ganga in Bihar.
Kosi – Left-bank tributary, also called the Sorrow of Bihar, originates from Tibet and flows through Nepal before joining the Ganga.
Lohit – NOT a tributary of the Ganga. It originates in Tibet and is a major tributary of the Brahmaputra River, flowing through Arunachal Pradesh and Assam.
Lohit belongs to the Brahmaputra basin, not the Ganga basin, making it the correct answer.