Dual

1. Government Certification Skills (Government of India Initiative)
2. Google Certifications- (AdWords Fundamentals, Search Advertising, Display Advertising, Video Advertising, Shopping Advertising, Google Analytics Individual Qualification (GAIQ)
3. HubSpot Inbound Marketing Certification- HubSpot offers Inbound Marketing Certification, which covers different segments of digital marketing on how to attract visitors, convert prospects and delight customers to convert them into promoters of businesses.

MCA has varied prospects in its own field of Computer applications just like any other degrees or Masters in their own arena. Thing depends on specificity of your strengths.

Yes,
If you are interested in integrated M.Sc in Bioinformatics, you can apply for that, after completing class 12th.

Hello.
Kurukshetra University may offer a dual degree in M.Sc, and Ph.D in nutrition and dietetics.

You can get previous years question papers of integrated M.Sc. In Physics by different Apps like EduRev infinity , Eduncle !

A dual specialisation actually widens the scope for your career as you can decide your domain. One disadvantage would be that you might not be able to focus in depth on a particular area. Generally, it is based on the electives you take in the final year that highlights your specialisation.

International Institute of Professional Studies, Indore
Doon Business School, Dehradun
Gurukul Institute of Management and Technology, New Delhi
NIMS University, Jaipur
Acropolis Technical Campus, Indore
Guru Nanak Dev University, [GNDU] Amritsar
Christ University, Bangalore
And many more provide dual MBA, you can apply for admission.
Good luck.

Different universities and colleges are running integrated BBA and MBA. So you have the appear for the entrance exam conducted by that institutions in which you want to take admission. So decide your preference of institutions and appear for their entrance.