Meerut

Top 5 colleges in Meerut for BCA are:
AR Institute of Management and Technology Meerut, India
Dewan Institute of Management Studies (DIMS) Meerut, India
Forte Institute of Technology Meerut, India
IIMT Engineering College Meerut, India
Kishan Institute of Information Technology (KIIT)Meerut, India

Hello Dear,
Here is a tool called college comparison app by Shiksha. You can compare any two colleges. Here is the link:
https://www.shiksha.com/resources/college-comparison

You need to appear for the entrance test conducted by the college.

The IIT coaching centres are plenty these days so we cannot judge any coaching centre as we don't have any idea about their preparation method.
We can just see the students passing out from there and their ranks. And it also varies every year as it depends more on the student than the classes.
So wherever you go, your effort matters a lot. Choose the one near you and also put a lot of effort.

Hello Anushka,
Admissions to engineering colleges is mostly through some or the other entrance exam. If you have not given any then you have to wait for cycle of next year to begin. Till then, you can do revise syllabus of entrance exam.

Hello Aditya,
Your rank is far beyond to take admission in any good colleges, however check here to get more insights:
https://www.shiksha.com/b-tech/resources/upsee-college-predictor