RAS question
Sukri River is a tributary of which river?
Correct answer: (A) Luni.
The Sukri, also spelt Sukdi, is a tributary of the Luni River in Rajasthan.
Explanation
Sukri is asked here as part of Rajasthan's internal drainage and western river-system mapping. Sukri, or Sukdi, is a tributary of the Luni and flows through Pali and Barmer districts. The Inland Waterways Authority of India, Luni River Final Feasibility Report lists Sukri among the major tributaries of the Luni, alongside Bandi, Mithri, Khari, Jawai, Guhiya and Sagi from the left, with Jojari from the right. That makes Luni the only option consistent with the river network; the other rivers belong to different drainage contexts in the options.
Why the other options are wrong
- (B) Mahi is not the supported parent river here; Mahi is placed to the south, while the Inland Waterways Authority of India, Luni River Final Feasibility Report lists Sukri as a Luni tributary.
- (C) Banas belongs to a different river system in the options and is not named by the Inland Waterways Authority of India, Luni River Final Feasibility Report as the river receiving Sukri.
- (D) Chambal is an eastern river choice in this set, whereas Sukri's river relationship is with the Luni.
Concept
This tests Rajasthan drainage-system mapping, especially the tributaries of the Luni in the western part of the state. It recurs in RAS because river-tributary pairs are a compact way to test district geography and drainage classification together.