Hello !!Eligibility criteria to do btech in cse is just to pass your +12 with minimum pass percentage.Entrance examinations are available to get seat in good college,based on the scores also some colleges provide fee concessions.So..no need to worry just complete your +12 you can get into btech easily and into whatever stream you want  to go for.Hope the above information may helps you.Good luck!!

Hello student no its not necessary to have computer science in your class 12 to do B.tech in computer science you may study in class 12 if you're interested but it's not mandatory. All you need to appear or pass class 12 with Physics Chemistry and Mathematics with English as a mandatory subject.

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Good luck