Government Polytechnic, Mumbai

Yes, you are eligible, but you should go for BTech. My best wishes .

The admission procedure is based on the percentage you have scored in 10th. Please follow the link given below to get all required details about the course. https://www.shiksha.com/engineering/course/diploma-in-mechanical-engineering-government-polytechnic-bandra-east-mumbai-56222.

You can get engineering with these marks but only in private colleges. In some private Colleges you may not get seat according to their merit criteria. You can go through management quota in any college.
you should go for BSc Electronics as it is available with these marks and it's good too.

Hi,
For getting admission in the mentioned college, you have to apply via the official website of the examination authority and then you have to appear for the exam, this is how you can give the entrance exam. Hope you got your answer.

ELIGIBILITY CRITERIA:
Candidate must have passed 10th standard or its equivalent with at least 35% aggregate marks.
Candidates passing 10th standard from Maharashtra State Board must have Maths/Mathematics (Code 71) and Science & Technology (Code 72) as compulsory subject.

Yes, you pursue the course through lateral entry.

Diploma in instrumentation engineering is a three-year full-time course. A candidate seeking admission in Diploma in engineering should have passed 10th or high school examination from a recognised board.