CBSE

Hi,
Yes, you have qualified in NATA (with 99/200 marks in NATA 2019 exams) and 82% in class 12th, so you will surely get admission to Architecture course. Rules of Council of Architecture for admission to Architecture course:
Only candidates who have the following credentials shall be eligible for admission to B.Arch. Course. I. Qualified through the recognized aptitude test in Architecture NATA or equivalent) in 2019
ii. Have gone through any of the following curriculum with marks as prescribed below: (a) Secured 50% marks in Physics, Chemistry and Mathematics and also 50% marks in aggregate at 10+2 level examination.

Hi,
As your JEE Mains score is 240, you will definitely get a seat in this college. You can get your favorite branch here. So, apply for the same at the time of counselling.
Best of luck.

Hi Prerna,As your son is in class 10th, he should focus on all the subjects, mainly in social studies. After completing matric, he should join a good institute for the CLAT preparation. They will guide them and make familiar with the exam patterns. Best of luck.

As per your rank the possibility of getting a rank in IIIT is sure. I don't know about NITs. You can use Shiksha College Predictor for this. All the best for future.

Yes of course, you percentage is great.

Yes, you can get admission here. Minimum eligibility to apply for the B.Com (Hons.) is 45% in class 12th. Mathematics/ Business Mathematics is mandatory in class 12th. Moreover, aggregate of one language and three best elective subjects would be considered as best four subjects (BFS). Download the pdf from here http://srcc.edu/sites/default/files/Guidelines-for-Admissions-2018-19.pdf for the details of admission criteria.

Yes, it can be form any board like CBSE ,SSC,ICSE or IGCSE.
Yes, CBSE is a good start. It is not harm for the candidate to do the course in any Board, but the candidate must have Physics, Chemistry and Biology with Minimum of 50% marks.
All the Best.

No, with this rank, it is not possible to get CSE in LNMIIT.

With this much marks there is less chances of getting admission for B.Sc Computer Science in DU. While Selection the Top four subject of your class 12th is considered including compulsory subjects. So, recalculate your percentage and check. If it is above 85% then there is some chance of getting DU.