Institute of Hotel Management, Catering Technology and Applied Nutrition, Mumbai

Your rank will be below 8000, if you belong to general category,
or below 4000, if you belong to OBC category.
All the best.

Yes, you can go for Diploma in food production or F&B services. The fees is less than 1.5 lacs.

Entrepreneurship is a critical part in the curriculum and policy of the institute.

You can pursue a Diploma course in the same. You can view the college list here
https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/colleges/diploma-food-beverage-service-courses-india.

If you are from general category, you need to have a rank between 15-400 for best College that includes IHM Pusa, Bangalore and Mumbai. If you are from OBC, you can have rank till 1800 for Pusa 5000 for Mumbai 9000 for Bangalore.

No, you can't you have to give the exam for hotel management again NCHMCT and clear it. You cannot have a Diploma degree and join B.Sc course as second year.

You may be getting almost no Central Government IHMs and you would obviously have to compromise on state level IHMs, but instead why don't you opt for private institutions like Oberoi or Vedatya Institute-Gurgaon, Oberoi STEP has no fee and instead they pay you stipend and Vedatya institute is one of the best hotel management institutes in Delhi-NCR providing top notch level of education with similar fee structure to IHMs.

If you are applying for central government IHMs, all will be having a similar fee structure and all State IHMs have same fee structure, but Central government IHMs charge higher fees than state level IHMs.

NCHMCT JEE exam can be write after passing class 12th or appearing in class 12th in respective year of NCHMCT JEE. Hence, you can write the NCHMCT JEE in next year i.e. 2020.

Yes, they do offer Diploma in culinary arts. You should be under this condition (Successful completion of HSC (class 12th of 10+2 pattern) or equivalent qualification with English, as one of the subject in the Final of the School Examinations) and you can get admission.