Architecture

You can either get directly admission in some private colleges or you can go for entrance exam for the top colleges. Do appear in entrance exam CAT to get admission into IIMs.

Yes, you can get a seat in RIZVI College of Architecture.This score is enough for a seat in the same campus.

This rank is enough for your admission in government colleges. You are eligible for getting a merit seat in government engineering colleges.

Yes, they are but with maths as a compulsory subject in their high school curriculum.

For admission to B.Arch course, you need a valid NATA score. All the architecture colleges require a valid NATA score for admission to architecture courses.

Hello,
Hope you are doing well. No, you are not allowed to get NITs with 152 marks and 64.8% in CBSE because you are from general category and your marks do not satisfy NITs cut-off offered for general category. You can try for some other colleges which accept JEE Mains paper 2 score and ranks.
NITs won't be possible for you.
All the best.

Architecture is a 5-year course in India and a 4-year course in the European countries.
It's considered as one of the toughest undergraduate programs in the world.
In fact, I believe that there is also a Guinness World Record for architecture to be the toughest undergraduate programme as many students leave the course in between.

Yes, but I think you may get a little more in trouble in admission because if any more good scorer comes then it might hamper your chances in getting a college.