राज्य की किस फसल को " काला सोना " के नाम से जाना जाता है ? - Which crop of the state is known as "black gold"? - Rajya Ki Kis Fasal Ko " Kala Sona " Ke Naam Se Jana Jata Hai ? Rajasthan GK in hindi, Rajasthan Agriculture Ganna question answers in hindi pdf Afeem questions in hindi, Know About Kapas Rajasthan GK online test Rajasthan GK notes in hindi quiz book Tobacco