i got 97.8 percentile(general) in jee mains paper 2 ( b.arch) what all India's top colleges can i get into ( preferably govt) ?? mention for banglore as well ??

Sai, let us first predict your expected ALL INDIA RANK based on the percentile that you have secured in the JANUARY JEE MAINS. Now, to calculate your expected rank for B.Arch based on the percentile score that you have secured, you can use this formula:

So, (100 - your total percentile score) is the percentage of people ahead of you. Also, 112679 were the number of candidates who appeared for January exam.

Also,note that the ranks will change according to increase or decrease in the number of participants in the next session.

So rank formula is (100 - your total score) X 112679 /100.

Now, according to this formula, your expected rank is around 2478. Note that it is the expected All India Rank and not your category rank which is very difficult to predict at this point of time. As you may be knowing, the admission to any college also depends on your home state considerations as well apart from your category and percentile, of course. In your case, you have a good enough percentile to get some of the top NITs and also other state-level institutions, accepting the JEE MAINS scores, based on the previous years trends. According to the previous years trends,here are a few NITs where you can get admission based on this percentile :--

MNIT JAIPUR

MANIT BHOPAL NIT HAMIRPUR

NIT PATNA

NIT RAIPUR

NIT ROURKELA (small chance based on home state considerations)

If you want to check the previous years cutoffs of some NITs, you can visit this link

https://engineering.careers360.com/articles/jee-main-cutoff-for-b-arch-b-planning

Apart from these NITs you also have chances for the state-level institutions too which accept the JEE MAINS score for admission and you should try for state-level counselling too.

Not only that, you have another attempt to go where you can improve your scores and increase your chances of getting the desired colleges.

Also, if you want to predict your colleges using your scores, you can use this college predictor

https://engineering.careers360.com/jee-main-architecture-college-predictor?icn=JEE_Main_Paper_2_clgpd&ici=JEE_Main_Paper_2_article_view_sticky