as per tamilnadu govt.group code 103 to be fill

CBSE(Central Board of Secondary Education) is a national board for education for public and private schools, controlled and managed by an Government of India . CBSE has asked all schools affiliated to follow only NCERT. There are approximately 19,316 schools in India and 211 schools in 28 foreign countries.

Well,the group code as per the ubject are:

Physics-042

Chemistry-043

Maths-041

Biology-044

Hope this information helpful for you.Goodluck.