B.Tech

There is difference between government college fee and private college fee. Government college fee will be around 50k annually, and private will be INR 1 lacs annually.

Yes, you can but it's depends on the basis of vacanct seats in second year.

You cannot get it. firstly you have to clear it. because either you should have PCB or PCM. Through PCM you can get admission in the engineering college. If you have Maths but failed in physics then also you are not eligible. So clear out the physics.
All the best

No, you can't select Biology as an optional subject instead chemistry, as Physics, Chemistry and Maths are the important subject of engineering. Engineering is nothing without PCM.

They should lock their college and after they have locked, they have to visit the alloted college along with documents.

Yes, you can apply for PMB Group in UPSEE counseling.

The fee would be around 80K per annum+hostel.

Yes, you are eligible for the Post Diploma in Wildlife Management.

Yes, you are eligible.
Indian applicants with a Bachelor's degree in any discipline (including those in the final year of graduation) with a minimum of 60% marks in the core subjects are eligible to apply. Central, South and Southeast Asian nationals with similar qualifications are also eligible.

All colleges in UP are affiliated with AKTU except NIT and IIT and there is no any difference between colleges of other universities and colleges under AKTU.