Dear aspirant , 

Computer science in std 12th is a bifocal subject . So you will not get admission on that subject basis. If you want to apply for bsc in computer science , then your std 12th overall marks and mathematics marks in std 12th will be counted and the admission will be on the merit basis . If you want to apply for engineering in computer science , then your std 12th PHYSICS , CHEMISTRY AND MATHS marks with your entrance exam score like JEE MAINS OR MHT CET or any university entrance exam will be counted , the admission is based on a percentile system and on merit basis . So, decide for which program you want to apply and study for .

You can get good colleges on the above admission criteria basis . 

Hope it will help you.