Samacheer Kalvi 9th Science Unit 25 Book Back Questions Tamil Medium with Answers: Samacheer Kalvi 9th Standard New Science Book Back 1 Mark and 2 Mark Questions with Answers PDF uploaded and available below. Class 9 Science New Syllabus 2022 Unit 25 – லிப்ரே ஆபீஸ் இம்ப்ரஸ் (Libre Office Impress) Book Back Solutions available for both English and Tamil mediums. TN Samacheer Kalvi 9th St...