Architecture Engineering

Hi Bala Krishnan,
I am attaching a link with which you can gauge the chances of getting Archi in NITs.
http://josaa.nic.in/Result2016/result/OpeningClosingRank.aspx

Dear, There is no possibility of error in checking because it's a computer process. Kindly check your paper with the official answer key. And if still, there are variations, then you might have done some mistake in the paper. And you are very much sure that you have not done even a single mistake in the paper then go for RTI.

You have a pretty good rank. You can get any of the NITs with a good branch.

Yes, after completing Diploma in architectural assistantship with min. 50% marks, you have to qualify the National Aptitude Test of Architecture to appear in AIIA exam.

Opt for the one that you love the most and are most passionate about and analyze the future work conditions, scope and growth prospects before taking admission.
You can also opt for psychometric test comprising of aptitude, personality and career interest to clear confusion.

There is no branch of engineering which is good or bad. Better is the branch in which you have interest because if you will have interest then only you can complete your engineering and can get high paid jobs. So, choose the branch in which you are interested.