How to apply in online betterment exams in class 11th

Dear student,

Unfortunately, you cannot send for re-evaluation of paper in your class 11th because it is proctored internally. Only Class 10th & Class 12th Board exams can be sent for re-evaluation. At best, you can speak to the head of your institution and request for it. 

If you are talking generically, you can find helpful resources in the form of practice papers and mock test papers to better your knowledge. Good luck!