If i are in 11th sci and i have to give exam of cet so for that when i have to resister the exam than when i should resister in 11th only
You have very good platform in which all the information is available. This platform is careers360.com, which have all the information related with all the fields. You explore whatever you want and come with specific question if you have any doubt.
If you are planning to appear MHT CET Entrance Exam then appearing for class 12 board can also appear for MHT CET Entrance Exam. You can check the complete information & eligibility with the given below link.
https://engineering.careers360.com/articles/mht-cet
Good Luck!