राजस्थान के किस जिले में स्लेटी पत्थर निकलता है ? - In which district of Rajasthan is the gray stone produced? - Rajasthan Ke Kis Jile Me Slatee Patthar Nikalta Hai ? Rajasthan GK in hindi, Mineral Resources of Rajasthan Alwar question answers in hindi pdf Badmer questions in hindi, Know About Ajmer Rajasthan GK online test Rajasthan GK notes in hindi quiz book Jaisalmer