Does TNPSC group 1 and 2exams have a compulsory tamil paper?
No , there is no such compulsory paper to write. But there will be more questions about tamil heritage, culture and the Administration.You need to prepare on that topic for sure.
If you don’t know tamil, you can Apply for the exam , but need to clear the tamil proficiency test within 2 years of appointment. If you have studied tamil as one of the subjects in your school, it is not required.