River Tributary Matching Analysis
This question requires identifying the river-tributary pair that is incorrectly matched.
Analyzing River-Tributary Pairs
Let's examine each option:
- (a) Krishna : Bhima: The Bhima River is a major left-bank tributary of the Krishna River. This pair is correctly matched.
- (b) Godavari : Wardha: The Wardha River is a significant tributary that joins the Penganga River, which then merges to form the Pranhita River, a major tributary of the Godavari River. This pair is correctly matched.
- (c) Brahmaputra : Kosi: The Kosi River is famously known as the "Sorrow of Bihar" and is a major tributary of the Ganges (Ganga) River. It does not flow into or join the Brahmaputra River. This pair is incorrectly matched.
- (d) Ganges : Yamuna: The Yamuna River is the longest and largest tributary of the Ganges (Ganga) River. This pair is correctly matched.
Identifying the Mismatch
Based on the analysis, the pair where the tributary does not belong to the main river is Brahmaputra and Kosi.
Therefore, the incorrectly matched pair is Brahmaputra : Kosi.