'Master GK' and 'Gujarat GK' are the best option for the preparation of all type of Competitive Exams like UPSC, GPSC, Dy. Mamlatdar, Dy. SO, PI, PSI, SSC, Chief Officer, RAILWAY, LIC, CAT, HTAT, TAT, TET, TALATI, CLERK, SPIPA Entrance, etc. No need to read different material for different exams.