I would like to know whether an MBA in hospitality or an MBA in tourism is a better option. I would like to study in Singapor

MBA with a major in Hospitality management will cover a wider scope of operations and commercial activity and therefore give you a bigger platform for professional growth. You should study MBA from a reputed business school. In Singapore, check out National University of Singapore, Nanyang Technological University, Singapore management University, INSEAD Singapore campus, University of Nevada Las Vegas Singapore campus and University of Chicago Graduate School of Business Singapore campus for the program that you are looking for.