UPCAT Eligibility

The candidates must hold a Bachelor's degree of a university incorporated by an Act of the central or state legislature in India or any other educational institution established by an Act of parliament or declared to be deemed as a university under section-3 of the university grants committee act,1956 or possess an equivalent qualification. Also visit www.ugc.ac.in.

Yes, you are eligible for the UPSEE, and admission in the affiliated colleges.

Yes, you can domicile is only needed to appear in this exam and nothing is done after that.

Hello
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Hello,
Here, I will mention a website for you. I hope this will help you:
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/upsee-college-predictor&ved=2ahUKEwjsu72NqojdAhUIPo8KHV1-B64QFjAAegQIABAB&usg=AOvVaw35nIYCmB-o81pLl73rIIvk.

Hello
Yes, why not, you are eligible.
Here, I will mention a website for you. I hope this will help you:
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Yes, you are eligible for the admission into the UPTU colleges after the counselling, but the main thing is that keep your documents ready for the verification.

Yes, only then you are eligible for the spot round because they have released some guidelines for the spot round.

Yes, you are eligible for UPSEE if you have opted science stream in class 12.

Either you didn't submit the fees for counseling or there might be some document error. I suggest to consult with UPTU Authorities, or
You should visit IET, Lucknow.