Hello bavadharini,
Class 12 Tamil Nadu Board quarterly exam question papers with answer keys for all subjects in downloadable PDF form is available on careers360. Here I have attached the link for you to access.
Hope it helps!
https://school.careers360.com/boards/dge-tamil-nadu/tn-class-12-quarterly-question-paper
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile