UPSC CSE Prep contains past 10 years CSE Pre questions and answers for practice. The app contains the previous year mains questions arranged by Year, topic and marks respectively. App contains studying material and notes for standard UPSC CSE books like: 1. Free M Lakshmikant Polity book. 2. Free History of ancient India by RS Sharma book. 3. Free History of Medieval India by Satish Chandra book. 4. Free History of modern India by Bipan Chandra book. 5. Free Spectrum: A brief history of Modern India by Rajiv Ahir book. 6. Free Indian economy by RS Singh book. 7. Free India struggle of Independence by Bipan chandra book. Other topics included for UPSC CSE exam: Class 9th SST notes Class 10th SST notes Indian Polity MCQ Indian Geography MCQ World geography MCQ National movement MCQ Ancient India MCQ Medieval India MCQ Modern India MCQ