CBSE 12th

You can apply for it. They conduct their own exam, you need to do well in it to get a seat there.

There are so many options you can choose from it all depends on your stream of study and interest. If you want to do a job there are low profile government jobs for which you can give tests. Or you can continue your studies and do your graduation. You just need to choose wisely. All the best.

Complete your graduation first then choose the job according to your field of study. Don't just think of earning try to learn and do it well, you will get a decent job for sure.
All the best.

The course followed by both is almost similar. I would suggest CBSE as most of the government exams refer to CBSE textbooks for their questions.

If there is nothing mentioned about individual subjects then you just need to have a combined percentage of three greater than 60% to become eligible.
All the best.

I would like to suggest you that you carry on with your studies in whatever domain you want to because it will give a better prospect for a job. After class 12th, there are low-level jobs. Try looking for government jobs after your graduation or while doing it. There are many government job exams for which you can prepare as per your stream.
Best of luck.

You can learn English by reading English newspaper, articles and watching English movies most easy way of all try improving your vocabulary try learning new words and then just learn how to put them together to make a fine sentence, it will take time but you'll learn it.
All the best.

The eligibility for a course basically depends upon the eligibility criteria of the institute/university that you are applying for, majorly you have to opt for physics in class 12th if you are in the science stream as it is mandatory in most of the schools.
Hope this helps.

You can opt for B.Sc (agriculture).