CBSE

Yes, Being indian, you may opt for any university for your higher education although selection possibility is low when you wish to opt for other state university that have state quota. but you may appear in UPTU entrance exam and try your luck.

Yes, he can study in Canada.

Hi Shrawan, what you want to take as a career totally depends on your interests. Here are a few course options that you can have a look at:
B.Com in Accounting and Commerce
BBA LLB
BBA/BMS
BCA (IT and Software)
Chartered Accountancy (CA)
Company Secretary (CS)
BA in Humanities & Social Sciences
BA in Arts (Fine/Visual/Performing)
Bachelor of Fine Arts (BFA)
BDes in Animation
BA LLB
BDes in Design
B.Sc in Hospitality & Travel
B.Sc in Design
Bachelor of Journalism & Mass Communication (BJMC)
BHM in Hospitality & Travel
Bachelor of Journalism (BJ)
Bachelor of Mass Media (BMM)
BA in Hospitality & Travel
BA in Animation
Diploma in Education (DEd)

Maybe, it's impossible because as it depends upon the CBSE affiliated school whether they will allow you or not.

Hello,To appear in IIT JAM exam, you must have a graduation degree in any discipline from any recognized university with minimum of 55% marks for General & OBC and 50% marks for SC and ST categories. But you also need to satisfy all the other eligibility conditions required to appear in the exam. Click here http://bit.ly/2LDciKV to check the complete details regarding IIT JAM Exam. IIT JAM 2019 exam will be conducted on 10th February 2019. So, you have enough time for the preparation. Best of luck.

Hi,
Yes, you can get it. First, you have to secure some good rank in WBJEE or in JEE Mains because there is no provision for direct admission in such programs.

Hello Abhishek,
It depends on this year's cut off, but according to last year cut-off, you will get admission in North Campus.

Apply to Hansraj College of Delhi. Also, you can look for colleges like Doon Business School, Dehradun with over 12 years of existence and ranked among top 25colleges in India by India Today.