CBSE 12th

Don't decide on the basis of the best branch and go for the branch that you like. Any branch from MIT will give you good placement. Just work hard and smart.

You will have to get the required marks in SAT to get placed there along with a good resume.

Dear,
Your score is light but I think it is not much relevant for some good university. However, there are many other institutes that you may also get admission into with your score.

Dear Sunita,
In India, I don't think that there is any specialisation for 'Astrobiology' neither job also. You can go abroad for the same.
For further queries, feel free to revert.
Good wishes.

You are advised to visit following links for information on Engineering Entrance examinations process and their calendar:
https://www.shiksha.com/b-tech/exams-pc-10
https://www.shiksha.com/engineering/resources/exam-calendar

Right now, you have only one option. You have to qualify for 12th class. It is the minimum qualification.

Hello Maddali,
Passing of 12th is the most poignant moment in one's life. You are at junction. Which road to take? I suggest, you take pause, ask yourself as to what is your passion? What are your likes and dislikes? If you start on the path of passion, you will not even feel hard work. If you work hard enough in any work, you are bound to succeed. So follow passion.

Well, you will have to give entrance tests like SAT, ACT, IELTS, TOEFL or any other exams needed to get into that college or accepted by that college and also have to have the minimum eligibility scores in 12th as required by the universities. Now, give the entrance tests and start searching for the colleges.

There are two courses that are very popular.
CA and CS. Both the courses provide a rewarding career as they provide jobs into statutory designations. Every company or business has got their accounts approved by Chartered Accountants compulsorily before final submission to the tax authorities.
Every company having a paid up share capital of 10 crores has to appoint a full-time company secretary. So both are very rewarding.
I hope this would suffice. All the best. God bless you.