RAS question
Which river is called 'Rajasthan ki Ganga'?
Correct answer: (B) Chambal.
Chambal is called "Rajasthan ki Ganga" because it is a perennial river with major importance for irrigation and water supply in Rajasthan.
Explanation
Jagran Josh identifies Chambal as the river called "Rajasthan ki Ganga" and explains the basis of the name. Chambal is a perennial river and is important for irrigation and water supply. Chambal flows throughout the year in Rajasthan, and water from it is used for drinking water, agriculture and irrigation in areas such as Kota, Bundi and Dholpur. For RAS Geography, the nickname matters because a year-round river with practical irrigation and supply value gains exceptional regional significance in a water-stressed state.
Why the other options are wrong
- (A) Banas is not called "Rajasthan ki Ganga"; Banas is associated with "Van ki Asha" instead.
- (C) Mahi is a southern Rajasthan river, but the "Rajasthan ki Ganga" title is reserved for Chambal.
- (D) Luni is linked with the salt-river identity, not with the perennial-flow and water-supply significance used for Chambal.
Concept
Rajasthan river nicknames depend on the geography behind them, especially perennial flow and water use. RAS frequently covers local river systems because they connect physical geography with irrigation, drinking-water supply and regional development.