If you are talking about any Computer Based Test (CBT) then probably there is no way to recheck your answer since all the answers you have given as a input during the examination will be checked by the computers programmed by the Competent authority organizing the exam.

If you are talking about pen & paper exams then there can be a possibility which you will have to check at the website of the organizing university.

Wish you all the very for your future endeavors!