Electronics Engineering

For electronics, both are almost the same, I suggest you to please take admission in that college, where travelling is more convenient, as it takes a lot of time.

You must go through DTE site, where there is the detailed list of engineering colleges. And, according to your preferences and suitability apply for the same.

You can get a job of junior engineer in government or private sector through recruitment exams. Another opportunity is further studies. You are eligible to get admission in B.Tech 3rd semester in electronics.

Sorry to inform but you should have above 75% in your under graduate degree, (I. e) CGPA 7.5/10, for courses because their is heavy competition out there and you also need to give competitive exam depending on the country you choose.
I hope this helps you.
Good luck.

Try to get GRE score. At present Germany is providing free of education for abroad students.

Yes, you can do aerospace engineering after Diploma in electronics. You are eligible for the same.

Take up physics, chemistry and mathematics and electronics optional in 10+2. Thereafter take up engineering in electronics and communication. You need both 10+2 and entrance exam too. Or, you can do Diploma in electronics engineering and then do a job. Or you also stand a chance to use a lateral entry into second year in engineering. Other options post 10+2 is B.Sc in electronics is a good option.

You can choose to do engineering in electronics and communication at state-level colleges or IITs and NITs or BITS Pilani and other universities. Diploma in electronics and communication and even bachelors in electronics is a bright option.