Colleges in West Bengal

First of all, admission in IIT takes place on merit of JEE Advanced rank. Second at this rank, I don't think you have any chance in NITs or IIITs.

This link will surely help you:https://www.shiksha.com/university/calcutta-university-cu/calcutta-university-entrance-exam-question-papers

Fee structure of this college is;
In the first year, you have to pay INR. 78,200
In the second year, you have to pay INR. 72,200
In the third year, you have to pay INR. 72,200
So, your grand total is INR. 2,22,600.
There is no proper dress code for any student but some kind of dresses are strictly not allowed.

Hi,
Visit this link to check colleges based upon your rank:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Good Luck. Hope it helps.

Hi,
Visit this link to check colleges based upon your rank:
https://www.shiksha.com/b-tech/resources/kcet-college-predictor
Good Luck. Hope it helps.

There is an entrance exam for this course in Scottish Church Kolkata as I have got to know in 12 years, I think around 150 students were called for the first counselling. So, all the best for the entrance test. You can check out the websites for application.
All the best.