Disha's BESTSELLER "21 Years CSAT General Studies IAS Prelims Topic-wise Solved Papers (1995-2015)" consists of past years solved papers of the General Studies Paper 1 & 2 distributed into 8 Units and 52 Topics. This is the 6th MEGA edition of the book and has been thoroughly revised and updated. The book has been designed in 2 colour so as to improve the readability of the book. The book has been further empowered with 4 INFOGRAPHICS (A3 size 4 coloured pull-outs) based on conceptual Topics - Sectors of Our Economy, Climate Change, Currency Devaluation, Payments Bank; The book further covers a Special Section on: (i) Budget 2015-16 (ii) Bills & Acts (iii) Govt. Policies & Schemes (iv) Diary of National Events 2015; The book has been divided into 8 broad UNITS, which have been further divided into the 52 topics. Although the book contains 37 chapters, certain chapters like Physics, Chemistry, Biology and Trends in Science & Technology are further divided into Topics. The strength of the book lies in the Errorless DETAILED Solutions. The book is 100% useful for both the General Studies papers (1 and 2) of the Prelims/ CSAT. The Mental Ability part of the past GS papers has been covered in the Unit "Mental Ability & Management Ability" and will be useful for Paper 2. ULTIMATE BOOK FOR STEP BY STEP LEARNING & PRACTICE.