B.Tech

Yes, a Diploma holder can apply for University of Allahabad for B.Tech CSE.

Admission into UG and PG courses at the Central University of Rajasthan (CURAJ) is based on merit through entrance exams and their cutoffs. It accepts the CUET scores for UG/PG admission. The students must meet the CUET  cutoff set by the university.

Yes, you can if you have completed your intermediate with Maths, Physics, and Chemistry. 

Also, you can give some entrance exams for colleges.

You can get various colleges in various universities after clearing CUET- UG exam for B Tech in your own state Delhi or other states.

As your preference is Delhi then you can get admission to any one of the following univercity 

1. Delhi Technological University 
2. Guru Gobind Singh Indraprastha University (GGSIPU)
3. University of Delhi (DU)
4. Jawaharlal Nehru University 
5. Jamia Millia Islamia 

Students should see NIRF ranking or university site for ranking list. Always check these every year as ranking can change when college improves or slips back. Also read reviews from other students to know real side.

Ranking comes from many things like infrastructure, student-faculty ratio, lab facilities, research, scholarships and student feedback. If these are all good then ranking goes up . Students can check these points before picking Uka Tarsadia BTech seat.