B.Tech

Yes, you can appear all you need to do just appear and clear the government exam.

CEOP is a well recognised college of Maharashtra. It takes admission through MH-CET/JEE Mains. But it's not about how much marks. One should have done 10+2 by Maharashtra board of secondary education. Should have more than 50 percentile marks. In talk of JEE Mains it depends on rank not marks. Different streams have different cutoff ranks.

Yes, you are eligible to write entrance exam in IIT Hyderabad for cybersecurity. It is not compulsory in some of the colleges to give GATE only. Students can take admission by entrance exams and fulfilling admission criteria.

No, not at all, you can't get any fake certificate of B.Tech of any good University or any other University getting a fake certificate is a crime, so don't it try to get any fake certificate or any fake degree instead of that go and pursue it.

Sri Venkateswara University is a public university. Candidates can get admission to B.Tech courses through Andhra Pradesh EAMCET common entrance test conducted by Jawaharlal Nehru Technological University Kakinada. To get ecet you need to score atleast 45% of marks if you are open category candidates and 40% marks if you are reserve category candidate.

For being eligible for SSC JEE, you need to have a Diploma or a Degree in Civil/Mechanical/Electrical discipline. You should have passed or the results should have been declared before January 1st, 2019. Final year students either B.Tech or Diploma are not eligible for SSC JE.

As per JET exams, at the time of registration, only you can choose your exam centre and for year 2020, the date for exam has already been given of 15-16 Feb.

https://www.shiksha.com/mba/cat-college-predictor
Here is the tool which you can use to get prediction of the college according to your score range.

https://www.shiksha.com/engineering/colleges/b-tech-in-aeronautical-engineering-colleges-india
Here is the list of the college that provide aeronautical engineering.

https://www.shiksha.com/science/colleges/distance-correspondence-m-sc-colleges-india
Here is the list of the college that provides M.Sc. In physics in correspondence mode.