Hey Nadish,
Since you had selected Physics, chemistry , maths and bio in class 12th, so if you have passed in all the subject then you can continue your study with CSE or computer science.
You can do computer science ( BSC) or you can also do BCA . Since BCA is a popular course so it will help you more but after BCA , MCA will be recommended.
Hello Dear,
sure, you can take a computer science after 12th whether you have PCM or PCMB.
for CSE you have two options - govt. institutes or private.
for taking a well-reputed college you have to take JEE-mains or jee-advance exam. (for govt.) like IITs, NITs etc.
or you can take direct admission without any entrance test in private institutes. like Chandigarh University, LPU, Shardha university etc.
good luck
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