RAS question
Jojri River is a tributary of which river?
Correct answer: (C) Luni.
Jojri, also written as Jojari, is a tributary of the Luni River in Rajasthan.
Explanation
Jojri, also written as Jojari, is regarded as the only right-bank tributary of the Luni. It originates in Pandalu village in Nagaur district, flows through Jodhpur, and joins the Luni near Balotra. The Central Water Commission lists Jojari (Mithri) among the main tributaries of the Luni Basin. The Luni originates on the western slopes of the Aravalli Range, while Jojri is distinctive because it does not originate in the Aravalli Range. Thus, this is not a general question about west-flowing river systems; it asks which river Jojri is a tributary of.
Why the other options are wrong
- (A) Mahi forms a separate river system in southern Rajasthan, while Jojri is a tributary in the Luni Basin.
- (B) Chambal is part of eastern Rajasthan's river system, while Jojri is a tributary in the Luni drainage system of western Rajasthan.
- (D) Banas belongs to a different basin. The Central Water Commission places Jojari under the Luni Basin, not the Banas Basin.
Concept
This tests your understanding of Rajasthan's river drainage, especially the tributaries of the Luni system. RAS often asks such questions because the origins, basins, and tributaries of rivers can be tested briefly and through maps, and rivers in western, southern, and eastern Rajasthan are easy to confuse.