Electronics Engineering

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.

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 ent

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.

Not all colleges will offer you admission now. Try to approach local recognised engineering colleges for admission.

There are two factors that you should consider while deciding where to take admission: the stream
and institution.
If you are not very particular about the stream that you want, then go for better institution i.e. COEP. But if your interest lies strongly in mechanical and you are not getting mechanic

Yes, you surely can. You are eligible to pursue M.Sc after B.Tech in the same or related field.

Both have different scopes. But in my opinion you should opt for B.Tech. B.Tech is a professional degree. Jobs are more on the basis of B.Tech. Many colleges offer this course. Admission is mainly based on entrance exam.

Percentage of placements is not too clear as per the college website , below are the company names listed who come for campus placements:
Companies / Recruiters who visited the campus:
Airtel biocon Cognizant Genpact Google HCL HSBC IBM IFB IGATE Indian Air Force Infosys Jindal Steel Microsoft Wipro