Only one time, a Newly qualified CA can appear in the campus interviews.
Definately there are chances to be selected if there are more than one trials in Final... Companies like E&Y, godrej and some other have the criteria of first attempt throughout...
But other companies see the percentage and select the candidate.
Even companies who are taking open test prior to interviews will selct most no. of candidates or may be all so that only the one who clears it can appear for personal interview. so in that case all have equal chance.. Just have to give your best shot in Interview.....