Class 11

You have many options.
It depends upon your intelligence.
If you are smart, then go for B.Tech.
If you are ordinary, then go for B.Sc.
If you are not interested in study, then you can join animation design school.

Practice Maths regularly, but give 2 hour for boilogy too, it will give you better results in future.

If you wants to score good marks in less efforts then physical education is quite good one. Otherwise, in terms of opportunities computer is the best one.

Sure, you will be able to do so if you are able to clear the cut-off.
If you will not be able to get good marks in maths and have an elective subject as a sixth one then you can apply.
And the sixth one should be selected in class 11th only according to me. Also, it is only available in some schools.

Solve the previous year's question papers of KVPY rigorously. Find your loopholes, and work on them. First and foremost, you will have to completely study NCERT of 11th standard. Work on subjects like physics, chemistry, biology and maths.

Go thoroughly with the NCERTs of Standard XI and XII. Along with that, start solving as many as MCQs that you can. This will surely boost your confidence up.

You need to appear National Entrance cum Eligibility Test after completion of your 12th examination to get admission into medical colleges.
All the best.

If you do Non-Medical, you will be having wider career options. You will be able to pursue career options of other fields like commerce and arts also. But, at the same time, you need to know that you must choose a stream in which you can do smart work and you have interest because, many career options will not help you excel in any field. It is your interest and hard work that can help you achieve your goals.

If you are not hurry in getting a job than you should go for 11th science then after your intermediate you may go for B.Tech in computer science. However, you should appear for different entrance tests of Diploma so that you have some options, in case if you are not getting admission in the college of your choice.