RAS question
The Mahi Bajaj Sagar Dam is built on which river?
Correct answer: (A) Mahi.
Mahi Bajaj Sagar Dam is built across the Mahi River near Borkhera in Banswara district, Rajasthan.
Explanation
Mahi Bajaj Sagar Dam is correctly linked to the Mahi River because the Department of Water Resources, River Development and Ganga Rejuvenation, Ministry of Jal Shakti describes it as a masonry dam across the Mahi River. It is located at village Borkhera, about 16 km north-east of Banswara town in Banswara district, Rajasthan. The dam is therefore near Borkheda in Banswara district and built on the Mahi. For RAS geography, the key is to connect the project name with the river system: Mahi Bajaj Sagar belongs to the Mahi basin, not to the better-known Banas or Chambal dam networks.
Why the other options are wrong
- (B) Banas is not the river for Mahi Bajaj Sagar Dam; Banas is linked with Bisalpur dam instead.
- (C) Som is a tributary of the Mahi, but the dam named in the question is built across the main Mahi River, not the Som.
- (D) Chambal has its own dam projects, but Mahi Bajaj Sagar is a dam across the Mahi River near Banswara.
Concept
This tests Rajasthan's river-valley projects, especially the matching of major dams with their rivers and districts. Such pairs recur in RAS because they connect physical geography with irrigation, water supply and regional development facts.