B.Tech

Hi,
Here is a list answering your query. Hope this helps.
https://engineering.shiksha.com/be-btech-in-mechanical-engineering-courses-in-tamil-nadu-ctpg

Bits pilani has the eligibility criteria that PCM aggregate should be 75%. So unfortunately, you won't be able to apply.

Go for M.Tech as it will help you to choose your career in academia in future

One can't take admission if he / she doesn't clear a subject in hsc
You need to pass all subjects
In several states the take the aggregate of marks in HsC plus cet

This is 4 btech.
-first give jee and try 2 score high.almost 10 or 20 marks higher than cutt off.
-also gave entrance exams 4 private institutes
-fill form 4 improvement exam
.if u want 2 make ur %age better.
.-if not interested in btech then go 4 bsc. Or various other things.

Yeah ofcourse u can pursue btech.
Bt if u doesn't have any interest in btech.then u can do bsc.or many more.

Dear Pragnesh, well yes you can. Take the Ielts before you apply. You must also check if their is any minimum academic grade requirements of the universities.
Best wishes