Samacheer Kalvi 9th Social Science Book Back Solutions PDF: Samacheer Kalvi 9th Standard New Social Science Book Back 1 Mark and 2 Mark Question & Answers PDF uploaded and available below. Class 9 New Syllabus 2019 to 2020 Book Back Ques & Ans available for both English and Tamil Medium. 9th Std Social Science Book is of Term 1st, 2nd, 3rd. All Term 1st, 2nd, 3rd Social Science ...