हजारीबाग स्थित पुलिस प्रशिक्षण केन्द्र की स्थापना कब हुई थी ? - When was the Police Training Center at Hazaribagh established? - Hajaribaag Sthit Police Prashikshan Kendra Ki Sthapanaa Kab Hui Thi ? Jharkhand Gk in hindi, शिक्षा 1912 question answers in hindi pdf 1952 questions in hindi, Know About 1882 Jharkhand Gk online test Jharkhand Gk notes in hindi quiz book 1981