KHAN SIR OFFICIAL

Khan GS Research Centre is Best Coaching Institute in India. For UPSC, PCS, BPSC, SSC, Bank, Rly, Airforce, NDA, CDS, CAPF, CPO and Other competitive Examination. Here you can learn History, Polity, Geography, Economics, Physics, Chemistry, Biology, Computer, General knowledge, Current Affairs, Science & Technology, Science & Technology, Defense, Space Technology, Indian Map & World Map, Social education.