Hi Muthu Krishnan,

A candidate has maximum of three attempts to answer JEE mains and two attempts for JEE advanced paper. If you have qualified in JEE Advanced but aren't satisfied with your score then you can reappear one more times with a better preparation.  Note that a candidate can attempt 2 times in consecutive years which means that you are allowed to answer one more time in the next year itself, if you have attempted first in this year.