Madras Institute of Technology, Anna University

Hello Aparna,
Your cut-off is not bad to get a seat for aeronautical engineering at MIT. But the competition is too high and so it is difficult to predict the chances. Try your best at the counselling. You can compare the previous year cut-off scores from the link below :
https://info.tnea.ac.in/tinfo/index.php
This year the cut off is expected to get reduced.
All the best!

Yes, you can join some colleges but some colleges set the criteria that they can take students only who got above 70% marks in class 12th. But some colleges will take the students who have above 60 percent marks too.

Yes, you can apply to MIT.

Dear,
Go to the below link for more information:
http://admissionsinchennai.in/admissions/2016/03/09/madras-institute-of-technology-chennai-admission-2018/
Thank you.

Hello Rehman,
There is generally no entrance exam to get admission at Anna University and so you can get admission based on the board exam marks. If you have a great score like 90% and above then you can apply for admissions.
For more information, you may refer to:
www.tnea.ac.in

Yes, you can. Of course, you can apply for councilling here.

Hello Amruth,
Your score is not bad, but you have very low chances of getting a seat at MIT-Chennai for aeronautical engineering. You need it score at least 95%.
You may try for other colleges with your board exam marks or via any other entrance exam.
All the best.

Hello Mahavir,
The admission is not based on the overall score, whereas, it is based on the cut-off marks out of 200 in PCM. Your cut-off needs to be at least 195 and above so that you can get B.Tech IT at MIT-Chennai.