झारखण्ड के किस शहर को छोटानागपुर का प्रवेश द्वार कहा जाता है ? - Which city of Jharkhand is called the gateway to Chotanagpur? - Jharkhand Ke Kis Shahar Ko ChhotaNagpur Ka Pravesh Dwar Kahaa Jata Hai ? Jharkhand Gk in hindi, प्रमुख व्यक्तित्व एवं आन्दोलन कोरडमा question answers in hindi pdf Devdhar questions in hindi, Know About Chatara Jharkhand Gk online test Jharkhand Gk notes in hindi quiz book DuMaka