What will happen if a WBUT candidate forgot to bubble his roll number?
To tell the truth those bubbles are left unread by the examiner or scruitinizer. So it is enough to write the roll no in the boxes above those bubbles. You have lots of proof that you are present at that day. The biggest of them is attendance sheet that you have signed. And again you have mentioned the college name. These two are enough to get your paper checked. .