Class 12 | வகுப்பு 12 | வேதியியல் | உலோகவியல் | அலகு 1 | பகுதி 3 | KalviTv By Centumwin May 17, 2022 Due to covid-19 pandemic disease the second wave has a severe impact in India so the schools are closed in Tamilnadu. Read more