Class 11

You can see:
https://ask.shiksha.com/what-should-be-the-preparation-strategy-for-tiss-bat-qna-4344891.

Hi,
If you don't want to study maths in 11th and 12 th standard the You can choose Arts or Commerce without maths. But choosing maths will be a better option.

For research institute, I would say he should go for B.Sc. If interested or IISc, B.Tech, IISER. To apply for B.Sc. In good Institution he needs score above 80% in 12th. And for other Courses like IISc and IISER he have to clear JEE Mains and Advanced both to get into IISc or IISER. For B.Tech, passing in JEE Mains is still okay. But for good College like IIT and NIT he have to clear Advanced or score above 150 in JEE.

If you are aware about the formulas and chapters of RD Sharma of class 11 and 12th, then you can complete them nearly in 2 months.

Both regular degree are not counted valid you can do HSC from open board or correspondence.

No, any student who has qualified 12th from science stream can apply for IISER.

Since you are from the commerce field, I would suggest you explore and research on ICWA and CA qualifications. If you are talking about the creative side of courses, then a lot of them in arts and craft, music, new language learning and designing can be done.

Make your strength your career. You can opt for history with any combination of political science or any other. Keep your language (English) as strong as now then you should make a career in English or history.

Hello Dear, To appear in NEET, you need to qualify 12th with atleast 50% in aggregate in Physics, Chemistry and Biology. You have PCMB. So, you need to score more than 50% in aggregate in it.

Hello Praveen,
It's good that you want to give JEE Mains after class 11th. But it will be a better option if you give JEE Mains after class 12 till then prepare well of both the classes because if you will give it after class 11th then you only know syllabus of class 11th and if cleared also you will not get admission in any college after 11th, you have to give class 12th so it's better to just focus on your studies and give it in 2020.