Engineering

There is somewhat chances for your admission in NIT, Trichy but still you have to be patient for the rankings to be declared then only it will be confirmed if you'll get admission or not. Good luck with your future.

Hello Kalesh,
Paint technology is a sub-branch of chemical technology. It is a very niche branch of engineering under the chemical engineering and hence the course is seen to be offered by few institutes in India. Here is the list of colleges:
ICT Mumbai
HBTU
MIT Pune
LPU
University of Mumbai

Yes, you have chances to get admission in NIT Surat.

I would suggest you not to join there. The rules are crazy. They keep a million tests without any reason. Nothing is taught practically.

Enter your rank in the link given below and get the list of best colleges:
https://www.shiksha.com/b-tech/resources/ggsipu-college-predictor

Go through NCERT books and purchase solved question papers of IPU CET. Try to solve them. You will get a better idea to score and syllabus.

IP University does not release marks, it only issues rank. Speaking of rank, it should be below 1000 to get CSE at USICT.

As per your rank, you will get top colleges under IPU domain. However, have a look over this to get more insights:
https://www.shiksha.com/b-tech/resources/ggsipu-college-predictor

Yes, if you want to pursue BCA or B.Tech with computer then it is mandatory to opt computer subject in 12th.