Hello Nagendra,

You need to know your rank in order to gauge the probability of qualifying for jee advance.  Although it is difficult to know the cutoff marks, 85 percentile and above is considered to be a safe option. Also, your aggregate marks would give a better idea of whether you would be qualifying or not.

Hope this helps. Please go through the link for further information.

http://www.engineering.careers360.com/articles/jee-main-result/