BCA

That totally depends on what you want to do after graduation. I mean if you want to work for a company as a developer then you should opt for BCA but if you want to be a professor then B.Sc. Is a good option for you. It doesn't mean that you cannot work for any company after B.Sc. But you have to work harder than others. The reason why I am telling you is that in B.Sc. The focus is on theoretical knowledge rather than BCA where you will learn about applications. Below are some of the best Private Universities:-
BITS Pilani, ICT Mumbai, Mumbai. VIT Vellore, Vellore. Thapar Institute of Engineering and Technology - [TIET], Patiala. ITER Bhubaneswar, Bhubaneswar. LDCE Ahmedabad - LD College of Engineering. Geeta University, Panipat
MSRIT Bangalore - Ramaiah Institute of Technology. BMSCE Bangalore - BMS College of Engineering.

Why to do graduation after completing post graduation. If you have interest in technology, I will suggest you to do MBA in IT. An MBA in IT Management will give you a unique competitive advantage as you will gain enhanced analytical and financial skills and knowledge of the latest technology. Its a lethal combination of two very dynamic aspects of any business: management expertise and IT. The course is a professional degree programme that covers two important aspects of business management. There is a rich demand of IT professionals having expertise in business management in the market today
The course typically allows you to explore various leadership styles and learn to evaluate and select the most appropriate style for managing the many IT functions, projects, and staff to deliver the intended value of IT to the organisation. There are many colleges in India that provide MBA in information technology:
Indian Institute of Management, Ahmedabad
Indian Institute of Management, Calcutta
Management Development Institute, Gurgaon
Geeta University, Panipat
Symbiosis Institute of Business Management, Pune
Shailesh J Mehta School of Management, Pune.

Yes, you can pursue MBA HR after completing BCA. The MBA in Human Resource Management (MBA HRM) programme provides information and training in managing an organizations employees. An HR professionals job is to create and manage a company culture and hire and retain the best employees. The HR professionals primary responsibility is to look after the company's employees. They are one of the most important factors to a company success and survival. MBA in Human Resources is a very demanding profession and the demand is likely to increase over time. The basic reason for this is, personnel are the most important part of any organisation, therefore management of the personnel is the most important task to be focused on. A student with an MBA in HR can avail high packages by providing their services in companies. Not only nationally, but the scope of this work is also increasing globally. List of some of the Top and best private colleges in India are the following
LNM Institute of Information Technology, Jaipur
Vellore Institute of Technology, Vellore
Manipal Institute of Technology
SRM Institute of Science and Technology, Chennai
Dayanand Sagar college of engineering, Bangalore
Geeta University, Panipat, Sharda University.

Yes you can do M.Sc. In Hotel Management. I would say, Pursuing a career in hotel management has tremendous scope. Career plays a vital part in any field. Students who are willing to choose hotel management will have many career options to choose from. In India, hotel management functions in both government and private sectors. The hotel management field is always been a hot career options among the students, with the globalization more and more hotel industries as expanding their business to the global markets. This has created a huge demand of hotel management professionals. Best hotel management colleges are mentioned below:-
Viva College, Virar
Geeta University, Panipat
AIMS Institutes, Bangalore
Christ University, Bangalore
Punjabi University, Patiala
NSHM Knowledge Campus, Kolkata
Gautam College, Hamirpur
MS Ramaiah College of Hotel Management, Bangalore
Jamia Hamdard, New Delhi
Manipal University, Jaipur
SHEDS College of Hospitality Management, Solan.