CBSE 12th

Hi,
When you study CS, there are various algorithms for which you have to have a good understanding of concepts like permutations and combinations, matrices, probability etc. that's why they ask for the subject. If they have asked for it then nothing can be done. You should have gone through the prospectus/ brochure of this course beforehand.

You should give improvement exams than do JEE entrance exam or other exams like IPU CET to get seat on the government college.

You have to give IELTS/TOEFL exams, but chances are not very high that some university will accept your application.

CA B.Com BA BBA then MBA, hospitality, VFX, animation, hotel management are the most sought out and most promised career after class 12th commerce. The forces also hire commerce graduates for ground duties etc.

Just take admission with your class 12th score in any of the Institutes offering psychology.

Visit this link
https://www.shiksha.com/college-predictor

Use this college predictor for MHTCET college prediction. Here, you will get information about in which college chances of your admission are high:
https://www.shiksha.com/college-predictor

You have secured a very fair percentage. As a general category aspirant, you know how reservations are, but don't worry you can get admission here.

The document verification takes place in the institution by the institution itself. There is no other way to verification and you should once go through the NATA 2019 brochure/prospectus.