B.Arch

Doing B.Arch from NITs and IITs is advisable but if you have tried but couldn't get admission then go for your choice but check about the college profile before.

You can get NIT Jammu Kashmir for sure and you will get other NIITs colleges but if you think to have more no. of colleges and universities, you can check for JOSSA site and check out the last year opening and closing of branch ranks and college.

Since your mains score is very good and well above the cut off for SC category, you can definitely try for NIT( surathkal,warangal or trichy). Do well in advanced and you might stand a chance for IIT as well.

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Sorry to say Gauri but with a rank of 70000 under general category in JEE Mains paper 2, it is quite impossible for you to get admission into any of the govt. colleges.
I hope you understand my point.

The cut-offs for various govt. colleges that accept JEE Mains paper 2 score for admission in B.Arch under different categories are as follows:
General - 300+
OBC - 250+
SC/ST - 170+

Sorry dear but 105 marks are not going to help you to fetch Jamia Millia Islamia for B.Arch because it is a govt. college and accepts a score of 300+ by general category students.
I hope you understand my point.
So, try for any private university/college.

I think you have very slim chances of getting admission in Jamia for B.Arch.
The reason is that you have women quota and Jamia has special reservation for candidates under women quota.
So, at the score of 203, you might get Jamia.

Sorry to say dear but your rank is too high. There are a few good govt. and private colleges that accept JEE Mains paper 2 score.
They consider a score of 300+ in JEE Mains paper 2 for general category and 250+ in JEE Mains paper 2 for BC category students.
I hope you understand my point.