Degree

Yes you can take. There is no restriction for admission on account of gap after 12th. However it is advisable here that you should go with IGNOU distance courses.

PGDM stands for post-graduation in Diploma in management. But, it is equivalent to other degree courses. But, it is a Diploma course.

As far as it is UGC approved, and a recognized university, it should not matter. However, such colleges and universities are very few, so enquire properly before getting in and getting out. Moreover, private colleges work best for working professionals, more than students.

Hello,
Kindly predict your college through this college predictor. The rank predicted might not be accurate, but it certainly gives an idea to the aspirant. https://www.shiksha.com/college-predictor

I do not have any degree in journalism under me online since my course of study is different, but you can pose your question to me.

Hello,
Kindly predict your college through this college predictor. The rank predicted might not be accurate, but it certainly gives an idea to the aspirant. https://www.shiksha.com/college-predictor

Hello,
Normally students opt for graduation after competition of Diploma in engineering. In any case eligibility for Diploma is class 12th & so also it is for graduation. Hence, if you have completed graduation then you can definitely seek admission for Diploma in engineering, but it is not called as PG Diploma. Best wishes to you.