Whatever is typed into column 2 would have to exactly match the answer for this to work. If it's multiple choice (i.e. the answer is a number or single letter) - no problem. Cell A1 is the question: cell B1 is where the answer is typed.
Formula for cell C1:
So, for a numerical answer (e.g. 1) it would be: =IF(B1=1,"Correct","")