Engineering Entrance Exam

You should wait for JEE to release the marks but there are various colleges which take admission based on your JEE marks.

You could get admission but you need some individuals during the time of counselling, so try other colleges.

You can get only one college that is NIELIT, Aurangabad and nothing else in Mains counselling and in the state counselling, that would be difficult to say.

Yes, you are eligible for this, and if you have any problem, then make an affidavit of a gap certificate. That will be better for you.

The rank will depend upon the number of students that will appear for the exam. So you can't get the exact rank. You can choose the rank predictor offered by many sites. I suggest you to go for Shiksha rank predictor only.

Yes, you can. Since last year, CBSE has defined the cutoff for PWD category separately. That is 1 mark only. It means, if PWD person will score 1 or above, then the candidate will be eligible to appear for Advanced exam. This year the cutoff is not release since the result is not announced. For more details please check this.
https://www.google.co.in/amp/indianexpress.com/article/education/results-declared-cbse-jee-main-2017-iit-madras-jeemain-nic-in-cbse-see-what-you-need-to-qualify-for-jee-advanced/lite/.

The qualifying cutoff for JEE Main can be somewhere be between 75-78, as per my predictions. All the best for your future.

Yes, you are eligible for the TNEA exam. You also have good marks, best of luck for your future.

It depends on your category. It is difficult to get Government College with these marks, if you belong to general category, but you can apply for some private universities too.