Which one of the following rivers is NOT a tributary of river Cauvery

Which one of the following rivers is NOT a tributary of river Cauvery ?

Hemavati
Arkavati
Indravati
Amravati
This question was previously asked in
UPSC NDA-1 – 2018
The question asks which river is NOT a tributary of the river Cauvery.
– Hemavati is a major tributary of the Cauvery, joining it in Karnataka.
– Arkavati is a tributary of the Cauvery, also joining it in Karnataka.
– Indravati is a major river in Central India and a significant tributary of the Godavari River, flowing through Chhattisgarh and Odisha. It is not related to the Cauvery basin.
– Amravati is a major tributary of the Cauvery, joining it in Tamil Nadu.
Therefore, Indravati is not a tributary of the river Cauvery.
Understanding the major river systems of India and their principal tributaries is important for geography.
The Cauvery River originates in the Brahmagiri hills of the Western Ghats and flows through Karnataka and Tamil Nadu before draining into the Bay of Bengal. The Godavari River is the second longest river in India, originating in Trimbakeshwar, Maharashtra, and flowing eastwards to the Bay of Bengal.