If you skip all exams then unfortunately you have to reappear in all the exams next year.

This is the best I know. I will suggest you to confirm this with your teachers too.

Best of luck!

Hello,
It's obvious that you would fail and then you have to do your 12th once again, you would fall a year back.
You shouldn't miss any exam it may either group papers or language papers.
And if you are not appearing for the one or two group paper then you will be allowed for compartment exam,if your failed to attend more than 2 exams then you have to reappear all exams for next year.
And to get admissions in good colleges and universities you must attend the exams on regular basis and you must score above 50% in board exams.
Thankyou