Download Social Studies – SST Class 9 NCERT Books in PDF. CBSE has prescribed Social Studies Economics, Geography, Political Science, History NCERT book for Class 9. All schools affiliated to Central Board of Secondary Education follow the same Class 9 Economics, Geography, Political Science, History – SST NCERT book. Getting high score in IX Social Studies – SST Exams is possible when student reads, understand and learn all concepts from NCERT book for Class 9 Social Studies – SST. Also practice important topics and Chapters from the NCERT exemplar based on new CBSE syllabus.