JEE

98 percentile is required for admisson.

For getting admission in DTU or NSIT via JEE or HSC score for CS, you have to score a minimum of 270+ marks in JEE Mains or a rank under 5,000 only then you can be able to get CS in these colleges.

After 12th boards, you will not be having enough time to prepare for JEE. Therefore, it is better to join a coaching institute after 10th boards itself, so that you can comfortably prepare and it will not be very hectic also.

Yes, you can apply to any college but I'll suggest you to register in the JEE Mains counselling as through that you can get almost all the GFTIs.

No, you can't get direct admission in this college. These colleges are the best colleges of India and also, these colleges accept admissions through JEE Mains score only.

Hello,
Disqualifying is not the last option for you. You may consult directly to CBSE regarding your issue through mail or call. As category correction comes under major correction criteria as accordingly your rank will be decided. Best regards.

Hi,For details information after class 12th Science, you can see below link:
https://www.shiksha.com/courses-after-12th/amp/science
Thanks.

Can you mention the state or City? So that I'll give you the list of best college with respect to those places. Since, every state conducts Common Entrance Exams to give admission to B.Tech for any college in India. Other way of getting admissions is through management quota, where you've no need to