Rajasthan GK- Nimn Me Se Kis Khanij Ke Utpadan Me Rajasthan Ka Ekadhikar Hai ?

निम्न में से किस खनिज के उत्पादन में राजस्थान का एकाधिकार है ? - Which of the following minerals is Rajasthan's monopoly in production? Rajasthan GK in hindi,  Mineral Resources of Rajasthan Panna question answers in hindi pdf  Tungsten questions in hindi, Know About Harasaunth Rajasthan GK online test Rajasthan GK notes in hindi quiz book    Sabhi