B.Ed

Hello,
Yes, you may apply for both this course simultaneously.

Please check your eligibility by following this link https://www.shiksha.com/b-ed-chp for general category 50%is mandatory. Otherwise, you can pursue Master and score more than 50%, then you will be eligible for the same.

This is partially true, as when you go for an interview in school your content knowledge is more important.

Hello,
You have completed your graduation in engineering and working in a school for the last five years and is now desirous of doing your Bachelor of education. Right? No, you do not have to do a Diploma in education for B.Ed. Eligibility criteria for doing graduation in education or B.Ed is graduation in any subject. Best wishes to you.

Yes, but ensure this, but your college as you are pursuing regular college then you might be aware of this already.

To pursue B.Ed, there are different minimum percentages for a different category. Please check that as
General 50%.