Samacheer Kalvi 7th Science Book Back Questions and Answers in Tamil Medium: Samacheer Kalvi 7th Standard Science Book Back 1 Mark and 2 Mark Question & Answers uploaded online and available PDF for free download. 7ஆம் வகுப்பு அறிவியல் பாடப்புத்தக வினா-விடைகள் solutions guide available below for Tamil Medium. Class Seventh candidates and those preparing for TNPSC exams in Tamil can ...