UPCAT

Based on the UPSEE rank you obtained, you can get the following colleges for CSE.
1. Noida Institute of Engineering and Technology
2. Babu Banarasi Das University, Lucknow
3. Vivekananda College of Technology and Management, Aligarh
4. MIT Group of Institutions, Moradabad
5. University Institute of Engineering and Technology, Kanpur.

Yes you can get. There are only 5% seats in each branch which are fee waiver seats in every college of UPTU. To ensure the fee waiver seat you must carry your original income certificate (certificate number 12) with its online verification to the counselling center at the time of counselling. However during the admission you have to pay the full amount of fee, the institute will refund the balanced fee at time of completion of first semester.

Yes,absolutely you are eligible for cse/it in iet lucknow

Yes, you can appear in UPSEE B.Tech Lateral exam after completion of your Diploma course. Admission in B.Tech First year are given to students, who has completed 12th with PCM and obtained the rank in UPSEE.