CBSE 12th

Panjab University is the no.1 ranked university among Indian universities according to Times' rankings.
If I talk about my review, Panjab University is the best in Chandigarh, I believe it should be declared a central university keeping in mind its reputation and other facilities.
I will like to mention some points that make this university "the best".
1. Beautiful campus: The panjab university campus, according to me, us the most beautiful thing you can see here at Chandigarh.
You can get admission there with your high percentage.

You can go for History or political science Hons. They deals with much knowledge of background and may brush up all your general knowledge.

http://www.learncbse.in/cbse-english-core-class-12-syllabus/
you can visit the above link.

You have lot of time left. Just take out only imp book (NCERT must) and study by making a perfect routine. And, please strictly follow it. Go to tuitions regularly if necessary. Put day and night together. Wake up with determination and go to Bed with satisfaction.

It depends on cut off. Every college varies in their cut off, and that's the advantage for science student, because they can apply for arts stream as in political science hons. English hons. He can opt for language course also.

Go with BBA or B.Com.
Or else, you can opt for B.Sc or B.Tech. Mention your stream, so that I can guide you better.

Students enrolled in the XI Standard (Science Subjects) during the academic year 2017-18 and having secured a minimum of 75% (65% for SC/ST/PWD) marks in aggregate in MATHEMATICS and Science subjects (Physics/Chemistry/Biology) in the X Standard Board Examination. Students promoted through both the Summative Assessments-II conducted by the school, and conducted by the Board are eligible to apply, if they satisfy eligibility criteria. If the students have obtained a letter grade in the qualified examination, they are requested to convert it into an appropriate % marks and fill-up the application form.