Government Polytechnic Pune

Yes, you can get, but there will be no benefit of doing class 12th, as it will only be considered on class 10th basis.

It depends on the caste category and the cut-off list of the college. There is no way of telling what will be the cut off of the college for a certain category. But, it will be more for OPEN and gradually less for others. You might find it at the college after there list is displayed. Just try to ap

Hi, Please refer to the link provided below for the detailed comparison:
https://www.shiksha.com/resources/college-comparison
You should be able to compare various features of the two institutes to help you reach a decision.

If you're looking for diploma in computer engineering, then your fee is around 40000 per year.

Yes, you are eligible. Check that whether college is still taking admissions or not.

Check the link below for the list of colleges and check admission details of desired college:
https://www.shiksha.com/engineering/colleges/diploma-aeronautical-engineering-colleges-india?ts=73507861&rf=filters&ss[]=sp_10&cr[]=10&cl[]=14
(Copy paste the entire link on the browser)

No, not at all, these courses can be done after the completion of +2. These courses are not of intermediate level.

Admission in government Polytechnic, Pune is through Centralised Admission Process of DTE Maharashtra based on marks obtained in 10th class. For more information check the link below:
https://www.shiksha.com/engineering/course/diploma-in-computer-engineering-government-polytechnic-Pune-shivaji-Nagar