Colleges in Delhi

As far as I have known, IHM-Pusa is better than the one in Mumbai in many aspects. I have a few friends studying in both the campuses, therefore, I have an insight of this matter.

Both are premiere institutions in India for hotel management. The placements here are 100% with the best package and a better designation. The work you have to do is develop your hospitality skills in a way you need to get through as an management trainee. A management trainee recruited in a campus placement for any hotel within 2 years he/she will become a assistant manager. Every students aim is to be a MT. Develop your skills in a way your different from others and you will definitely get placed in hotel chains.

If you belong to any reserved category then you may get the IHM, Mumbai or Delhi, but if you don't then there are less chances of getting into these colleges.

Sorry to say, but you will not get any college on the basis of your NATA and JEE Mains paper 2 scores. The reasons are:
90+ marks are considered as NATA cutoff for various government colleges.
300+ marks are considered as JEE Mains paper 2 cutoff for NITs and government colleges.

Yes, after your intermediate i.e. Class 12th, you can apply to the college for general category. Delhi University will display cutoff for each course college wise in its official website. The application will begin by June and cutoff would be out by July. Work hard secure good marks in your class 12th , you can get other good colleges of DU as well. Regards

The admissions will be open in May, so you may apply for BA LLB in the same month.

Yes, you need maths in class 12th for BA economic Honors in DU. Non-maths students can not apply for this program in DU.
I hope, it will help.
Good luck.