If i do well in an entrance exam and eligibility for ba entrance exam is 60% in 12th but i got 59.5% will i get admission or not ?

The issue is very complicated but the simple answer is that if do not fulfill the eligibility criteria then you will not be able to get the admission even if you try hard in any entrance exam. Because to appear in the entrance exam for any course one must fulfill the basic eligibility criteria whhich shows the knowledge of the candidate about that stream and if do not have that basics then it would be difficult for you to apear though the difference is very less but you have to fulfill the criteria. The application for any entrance will be online at there you have to enter the educational qualification so with your marks you will not be able to appear in the entrance.