GATE

Yes you are eligible to appear in GATE. you should visit the website of IITs for syllabus,eligibility criteria. if you secure a good rank in it you will get admission in IITs, like IIT roorkee

If you want to do job in the industry than after some years you required a master degree, for managerial post sometimes MBA is the best choice but m.tech is a core field and you spend four year so you can do in the engineering itself unless you got a very precious business school like IIMs, xlri, MDI, FMS and IITs etv

It's bit difficult to do preparation with job. however many people did it with job, what actually required is that your continuous effort. you may join some test series to be active. Bring last ten year question papers and go for your strongest subjects first then cover other one by one.

Take admission in PG diploma and start preparing for GATE. As in chemical engineering very less rush in GATE so you have a great chance to get IITs in next year. All the best

First take admission in b.tech. In first year you have only mathematics which is mainly relevant to GATE so do start preparing it. your college may have some computer course in first year, so also prepare it. You may visit my recent activity to get more about gate preparation.

Yes it is good. Now focus on you BSc and try to qualify GATE.You also get admission in IITs on the basis of GATE in m.tech or m.sc. It is a good idea. All the best.

I think you are eligible if your degree is recognized by UGC and AICET. As AMIE which is a corresponding degree from institute of entertainment India.