Career

Yes, If you have done you post Graduation degree then it is more beneficial than Under Graduate degree and you have more preference than UG Students so you should try to do PG after completing your UG.

In this competition world people just want jobs doesn't matter which type of job is this but as you asked this question government jobs are secure but in private job you are not secure. In a private job, you get more facilities as compared to government jobs.
So, in term of future, government jobs are good in terms of salary private jobs are good.

You should try to prepare for UPSC through coaching and always updated with the general knowledge and mental ability question and solve more question in less time so that it is beneficial for you to crack the exam.

Check the eligibility in the link provided:
http://www.google.co.in/url?q=https://spipa.gujarat.gov.in/downloads/upsc_brochure_2015.pdf&sa=U&ved=0ahUKEwjBgJ-1wN7UAhVBLI8KHYItDDgQFgglMAA&usg=AFQjCNEOpY_mLPbrQVg3ByY38M331h-5_Q

GATE exam mainly compromises of core fields like CSE, ME, EE, ECE, CE, etc.
Your field is electronics with software technology, I don't think GATE will allow you to appear in the exam.
You should have thought before taking this stream if you wanted to appear for GATE.

Hello Priyanka,
You have acquired lots of qualifications but none of them except HR can take you to your passion. If you want to make career in medicine then you must do some course of hospital management.
Best wishes.

Hello Girish,
Event management is an emerging subject. But it has great potential in future. On the other hand, retail management too has good future. In India, till the time population is growing, both of these will have great future.