RAS question
Orai Dam is on which river?
Correct answer: (B) Orai.
Orai Dam is built on the Orai River in Chittorgarh district of Rajasthan and is used for local irrigation.
Explanation
Orai Dam is on the Orai River, not on one of the larger river systems named in the other options. It is in Chittorgarh district and is used mainly for local irrigation. India-WRIS records Orai Dam as an irrigation project, names the river as Orai, places it in Begun tehsil of Chittaurgarh district, and marks the project as completed. For the MCQ, the decisive field is the river column: Orai is the river associated with Orai Dam, which makes option B the substantive answer.
Why the other options are wrong
- (A) Berach is not the river named for Orai Dam in the India-WRIS entry; the river column records Orai.
- (C) Banas is a major Rajasthan river, but India-WRIS does not associate Orai Dam with Banas; it lists Orai.
- (D) Mahi is not linked to Orai Dam in the official listing; the Orai Dam row names Orai as the river.
Concept
This tests Rajasthan irrigation geography, especially the matching of dams with their rivers and districts. Such facts recur in RAS because local water projects are often asked as direct map-based or pairing questions.