RAS question
Which mineral is found at Degana in Nagaur?
Correct answer: (C) Tungsten (Wolframite).
Degana in Nagaur is associated with tungsten, chiefly occurring as wolframite.
Explanation
Degana in Nagaur is a tungsten location. The Rajasthan Department of Mines and Geology's Metallic Minerals page treats tungsten as a metal of strategic importance and states that its chief sources are wolframite and scheelite. Important tungsten deposits in Rajasthan include Degana in Nagaur, and Nagaur's Tungsten entry includes Degana. Tungsten (Wolframite) is the specific mineral association for Degana, not a generic metallic mineral. Tungsten has practical uses in light-bulb filaments and cutting tools, which reinforces the Rajasthan mineral-location association: Degana-Nagaur means tungsten/wolframite.
Why the other options are wrong
- (A) Zinc is not the Degana association; zinc is placed at Zawar instead.
- (B) Copper is not the Degana association; copper is linked with Khetri.
- (D) Gold is not supported for Degana, while the Department of Mines & Geology, Government of Rajasthan specifically supports tungsten at Degana.
Concept
Rajasthan mineral-location mapping matches a mineral with its known mining or deposit centre. Such pairs recur in RAS because they are compact, high-yield facts from Rajasthan geography and economic resources.