Colleges in Kolkata

https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/course/bachelor-in-hospitality-and-hotel-management-university-of-engineering-and-management-kolkata-rajarhat-313517 the link here will take you to the fees structure of UEM Kolkata which will guide you for others too

Yes, you can learn western dance form by pursuing BA (Hons.) in Dance/ MA in Dance as per the eligibility criteria. Click below to check the eligibilities
https://www.shiksha.com/arts-fine-visual-performing/dance-choreography/course/b-a-hons-in-dance-rabindra-bharati-university-b-t-road-Kolkata-26961

It will cost you around 80-90k per year without hostel.

It mainly depends on your interest, but according to me, if you want to start your business in food industry, then you can opt for the food tech, as this field requires less capital in starting as compared to the biotech. But, if you want to do the job then you should opt for the biotech as there is

It will cost you 85K per year without accommodation, in this college, the fee for the whole year and not semester wise.

It will cost you around 60K per year without accommodation.

It will cost you around 1.2 lacs per year for this course.

It will cost you around 85K per year for the batch 2017-2021 for pursing B.Tech.

Hi!
No, Biology is not required. For detailed information, you can refer https://www.shiksha.com/science/course/b-sc-ll-b-hons-the-west-bengal-national-university-of-juridical-sciences-salt-lake-city-kolkata-260968