IIT

No, it is not important to stay in hostel but you won't get any transport facility from the college side as well. You'll have to arrange that on your own. Moreover, college hostel is most convenient as per my experience till date.

Yes, you definitely can appear for IIT JEE if you clear cut-off for the eligibility. For that you have to appear for JEE Mains.

Hello Anish,
Yes, you can change the branches from biotechnology to chemical engineering and any other choices. The only way is to have a high score in the semester exams like 9/10 or more CGPA/CPI. The one with a high score will be given the first preference. In case of a tie, JEE Advanced ranks will be used.
I think this provision is available in all IITs.
But, you cannot change from B.SC to B.Tech, as they are two different streams.

Hello Joydip,
Your home state is mentioned on your birth certificate, if you have Tripura as your home state, you can surely mention it in the admission process.
Hope this helps! All the best!

Hello Afzal,
If you want to improve your marks, you have to attempt all the papers. If you give one or two papers, it will be not considered by the JEE and your previous year marks will be taken into consideration.

Hello Harsha,
The cut-off for SC students is very low in the JEE Advance Exam for SC student, so you have to score like around 60-90 marks out of 360, you can easily get into IITs. For more information about the IIT cut-off ranks and merit list click on the link given below:
https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0

Find a link below that will help you to find a college that you might get into with your rank/score:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Hope this was helpful.

Yes, with that rank you can get into NIT, Trichy and also try for NIT, Raipur then MNIT-Jaipur for knowing the opening and closing ranks of JEE Mains. Follow the link josaa.nic.in

Hello Baliram,
In aeronautical engineering, study revolves around aviation where theories are limited to air but astronautics comprises of space study. Both are better according to my perception. Sectors for jobs are Boeing, Taneja, TAAL, BHEL, Mahindra, ISRO, DRDO, etc.

My opinion is that you have to take admission in an autonomous college. You can easily get YCCE if you want.