Hii,

The Basic eligibility of getting seat in any Engineering college is one must have passed 10+2 with minimum 50% of marks from a recognised Board of University. Some universities make it 60% . But in most of the colleges it is 50% . If you have more marks in your Board exams you will have high chances to get seat.

there is always a new cut off percentage every year but seeing the trend or safe score for any college would be above 75%  and good performance in mains is definitely desired