Hey!

Yes, you can write TNPSC group 1 exam, as to appear for this exam candidate must have a undergraduation degree in commerce or law and his/her age should be atleast 21 years. Group 1 exam is conducted in three levels: prelims (mcq), mains (descrtiptive paper) and interview of 100 marks. To know more visit here;

https://competition.careers360.com/articles/tnpsc-group-1

Thankyou