B.Com

No, it's better to take CAT exam only after pursuing your graduation because to get a call from IIM, it's necessary.

The fee structure is INR 34000 to 35000 (approx.).

SD is slightly difficult. Maybe you get it in the 2nd or 3rd round of counselling. But you will definitely get it in some other good college of Panjab University.
All the best.

Yes, you can get entry here with at least 75% in diploma.

Hello,
Yes, you are eligible for CAT as you are in the final year of your graduation.

Yes, you are eligible for CAT exam but remember that if you are aiming for IIMs through your CAT score then you must have worked somewhere for 2 years or any strong reason should be there to fill for your gap years.
Good luck.

The eligibility says that a candidate must have passed 10+2 from a recognized board.

You have scored good marks in HSC, so you can apply for any of the courses. If you have scored good marks in accountancy then apply for B.Com (any specialisation).

Dear Samkit Chopra,
Eligibility to pursue LLM (Master in Law) is LLB (Bachelor of Law). After completing LLB, you can appear for the Common Law Admission Test (LLM).

Hello
It is B.Com (Hons) with international accounting and finance. So I am providing a Shiksha link which help you to understand this course. https://www.shiksha.com/accounting-commerce/course/b-com-hons-in-international-accounting-and-finance-in-collaboration-with-acca-uk-school-of-business-studies