RAS question
The Bisalpur Dam, one of the largest dams in Rajasthan, is built on which river?
Correct answer: (C) Banas.
Bisalpur Dam in Tonk district of Rajasthan is built on the Banas River.
Explanation
Bisalpur Dam is a Banas River dam in Tonk district, Rajasthan. The India-WRIS Rajasthan dams table lists Bisalpur Dam with the river as Banas, the nearest city as Devli, the district as Tonk, and the status as completed in 1999. That matches the standard RAS fact: Bisalpur is not a western-Rajasthan or Chambal-basin recall item, but a major Banas-linked water project. Its importance comes from its dual role in irrigation and drinking-water supply, including supply for Jaipur city and Ajmer. The given storage figure, approximately 109.5 crore cubic metres, explains why the dam is repeatedly used in exam questions on Rajasthan's rivers, dams, and water-resource geography.
Why the other options are wrong
- (A) Luni is a western Rajasthan river, while the verified Bisalpur Dam entry identifies its river as Banas.
- (B) Chambal is associated with dams such as Rana Pratap Sagar and Jawahar Sagar, whereas Bisalpur is listed on the Banas River.
- (D) Mahi is the river for Mahi Bajaj Sagar, but Bisalpur's listed river is Banas, not Mahi.
Concept
This tests Rajasthan's river-dam mapping, especially the ability to connect major water projects with their rivers and districts. It recurs in RAS because dams such as Bisalpur link physical geography with irrigation and drinking-water supply.