CBSE 12th

Yes, you can get admission in the Punjab University, since this is a private university.

While nothing can be done in these cases as they clearly mention in their brochure but you should request the authority, and hope they give you an allowance. It also happens that if you have incomplete documents registration does not proceed, so you can tell them there might be a glitch or error in the website.

Hi,
Please specify the college name. All the best.

Yes, you have secured very well in both the exams. You have very high chances of getting the admission.

Yes, you are eligible for the course, and also you have secured a very good rank, you have high chances of getting admission.

No, your 12th % is not counted. Your academic performance in your MCA course is the basis of your placement.

https://www.shiksha.com/bca-bachelor-of-computer-applications-chp
Refer to the above link for information about the admission procedure.

Yes, you can do, but why you want to do this, because B.Com is a line after which you can do MBA or M.Com.

Hi,
All the colleges are really good, whatever choices are available to you, kindly mention them and reframe the question. So that, we can tell which one to opt for as such, if you are getting in any e architect School which is affiliated by the government then it is better than others. All the best.

Yes, chances are good, you need to fill amity application form which is available on their website.