yes, you can get a good engineering college with 85% in the 12th class, it will be Tier 3 college but during the choice filling, make sure the placement and coding culture of the college is good. Rest it's up to you how hard you will study and how determined you are towards your career.
Make sure you study all the concepts of CSE during your college from 1st year only which will help you in the final placements.
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