Exam

It is basically a version of the SAT that's scaled down for an Indian student(the English part). It is found pretty easy though. It's neither too tough nor too easy. Just the right level of English and aptitude you are expected to have at this level.
Yes, definitely, if you do well you will get this

Yes, to get admission for MA in journalism and mass communication, the entrance exam is mandatory.

Hi Sanjeet, registration for B.Ed entrance has been closed in many universities and colleges. But some colleges and universities take direct admission of students in their campus. So maybe you still have a chance to get admission in B.Ed.
You just need to go at any the nearest cyber cafe and website

Yes. But a good rank in ICAR is necessary.

NEET exam is for medical, not agriculture. For agriculture, AIEEA exam is necessary.

Yes, absolutely.

Yes, you can get it.