CBSE 12th

You can get a seat in few lower NITs but depends on which branch you want.

Yes, you can get admission if you have done your PUC with science.

You can get the admission but you can prefer engineering, B.Tech or B.Sc.

Hello Gaurav,
You may use the college predictor tool from the link below to know your chances of getting ACS and other colleges with your JEE Mains percentile:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor.

Hi, First of all congratulations, with 72 percentile in JEE Mains Paper 2 exam and 54% score in your class 12th, you have good chances to secure admission in good colleges across the country. It would have been easier if you could have stated the state/ region, you are seeking to pursue your B.Arch programme. Check the link below to get a list of approved architecture colleges. https://www.coa.gov.in/index1.php?lang=1&level=0&linkid=25&lid=26.

Yes, you are eligible for doing law. Start preparing for CLAT exam. Prepare for humanities subjects and focus on Indian constitution along with the GK.

It would be better to do it in India than abroad. You will get more opportunities here and will be cost effective too.

You have no chances in any NIT at this rank. You should rather try for private colleges.

You have no chance in IIITM Gwalior at this percentile in JEE Mains for CSE branch. Better to try for newer IIITs.

Hi,
It will be very difficult for you to get a good college under Delhi University with this score in class 12th board. Although you should apply for DU and wait until the last round of cutoff. If not getting any seat, then go colleges like Amity University or Lovely Professional University.