I will suggest you to choose btech than polytechnic.
In terms of degree requirements and acceptability for employment in India a B.Tech or B.E is a far better prospect than a Polytech diploma.
My suggestion is go for B.Tech even if at a mediocre college or else go for a polytechnic diploma at a good college if you have no good or moderate B.Tech colleges in your list.

GB Pant is an average college and not that poor in conduction.
You can check the reviews here.

Good luck.

College of Technology, GB Pant University of Agricultur ...

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