Hello madhusudhan,
If you have deep interest in web designing, app development and ethical hacking then I will suggest you  to do graduation with BCA or B.tech in CS engineering. But from my view you should give priority to Computer science engineering because it will provide you best platform for your interests .
Hope it helps.
Good luck.

Madhu, CBSE has released a list of courses that students can pick from based on their interests and subjects they have studied in theoor 12th. This is a 113 course list. You can access that list at their official page: http://cbse.nic.in/newsite/attach/Compendium%20of%20Courses%20after%20+2.pdf

Nanhi Pari Seemant Engineering Institute, Pithoragarh

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