Exam

Yes, Babu Banarasi Das University (BBDU) offers the Bachelor of Interior Designing program with admissions based on merit. Specifically, the university states that admissions are based on the marks obtained in the qualifying examination (Class 12) and may not require an entrance exam for this specific program. 

Scoring 450-500 marks in NEET mock test is good and conveys that you are on the right track but you should do more such that you can easily go in your exam as the paramedical exam is quite different from NEET in terms of both pattern and competition. To get good score you need to do more study and improve more. 

No, you cannot get any government college with a good branch or any branch. You should try the private colleges such as Amity, LPU.

No. you cannot get IT or CSE branch in DTU with EWS rank of 27681, it usually ends up at 4-5k rank in JEE mains, you can see other branches in DTU, NSUT or IIIT DELHI. You will find good choices with this rank but surely not IT or CSE in DTU.

There are some state government colleges but should go for private colleges like LPU or Amity. You can also apply for good colleges like Thapar if you have a good board score but with a category rank of 324312 in JEE Mains you should think of private colleges as finding government colleges is tough.

CSE/IT in NITS is almost not possible but non core branches are possible in last round/spot round. Also newer IIITs have options, you can try ECE/IT in new IIITs also. You can give VITEEE exam otherwise in general category. All the courses with integrated M.Tech are tough to get in 95000 rank

If you're a PCB (Physics, Chemistry, Biology) student without Mathematics in your 10+2, Then you are not eligible for JEE Advance.JEE Advanced is meant for admission to IITs, and the eligibility criteria clearly state that candidates must have studied Mathematics along with Physics and Chemistry in their 12th standard.

With a JEE Main score of 53.06 and a SC category rank of 55137 in JEE Mains, securing admission in top NITs, IIITs, or GFTIs may be challenging. you better try other universities or private B.Tech colleges.

Yes, you can get admission to the CSE programme on the basis of the 12th HSC board exam. Many private universities offer direct admission to CSE based on your 12th HSC board marks without requiring JEE or MHT CET. The universities like MIT-WPU (Pune), Amity University, Sharda University, Lovely Professional University (LPU), Manipal University and Symbiosis Institute of Technology provide admission.

Unfortunately the registration and correction windows have been closed for this cycle. You may consider applying for the next cycle or maybe try finding out other institutions with the same course.