B.A

IGNOU could be a good choice. It is easily accessible and has plenty of regional centers across India. And, it is very affordably.

You can be a teacher if you do B.Ed. And, there are so many firms which require English literature candidates.

You haven't specified your Bachelor's programme. But, still it's always better to take something that's somewhat related to your Bachelor's. It helps you in your future. Some people take Masters that's not at related to their Bachelor's this creates lot of confusion for employers and other problems as well.

Yes, you can but what's the need for a change of medium as you have to face the English in the future again. But, it's your choice and you are allowed to do so. Thank you.

Inorder to join a Bachelor's programme in India, your minimum qualification should be class 12th or it's equivalent. Ensure your current qualification is equivalent to class 12th grade in India.

No, it is not a must. You can choose this according to your choice.

After completing graduation, you can apply for masters in Hindi

Yes, you can. But, what's the need of a change of medium as you have to face the English in future again.

Some colleges do provide it. But it's not necessary that all of them provide this specific course.

Yes, there are scholarships available. Contact your college administration for details on the same.