Engineering Scope

Through campus placement, appearing and qualifying in GATE as many government organisations and PSU gives employment on the basis of GATE.

Yes, there is a difference but executive MBA is for candidates who are working and it is short term MBA of 1 year program and MBA i.e. full time program of 2 years. If you are fresher, go for full time MBA as companies prefer candidates with full MBA.

Research Projects/ Relevant Internships: Depending upon your interest try for projects/company intern.
Develop/follow your interest: Here interest means having sound understanding in anything like politics, entrepreneurship, financial markets, automobiles, gaming, etc.
Focus on academics: Try to score as much CPI as possible (aim for 10).

Instrumentation engineers find employment in industries which improve efficiency, stability and safety of automated processes. The industrial sectors include:
Public/Private firms, R&D organizations, Steel plants, Cement manufacturing companies, Thermal power plants, Chemical companies and similar industries.

I have seen some posts like junior scientists in ISHRO and DRDO after completing B.Tech, but 65% marks or 70% marks throughout is minimum criteria for applying.

Hello,
I can understand your desire. It is possible to change within the state. You need to approach administrative staff of your college.

Hello Payal,
NASA is a US government organisation. Hence employment there is restricted to US citizens at least in core areas. However, NASA keeps updating its requirement of professionals on its website. You need to keep watch on regular basis to know about opening.