Science

BCA is a job oriented degree course and you can go for job immediately after BCA in Small and Medium size IT companies. Unfortunately Indian IT industry does not prefer BCA for entry level Developer and Testers role. You may get junior developer or Application support jobs. B.Sc CS is a more academic course, and focuses mainly on mathematical and theoretical foundations of computing and help students to become Systems Developers.
Syllabus of B.Sc CS and BCA is similar up to 70 to 80% in various universities. Courses on Computer languages, data structure, databases, and networking etc are common. BCA degree course program is primarily focused on in the field of Computer Applications such as mobile computing, ERP, SCM etc whereas B.Sc CS degree program primarily focused on subjects with more mathematical and theoretical foundations of computing rather than emphasizing specific technologies. It covers all emerging topic like Artificial Intelligence, BIDW etc. Market acceptance of both degrees are similar. Both degrees can only help you to get only entry level jobs and will require acquisition of PG degrees such as MCA and M.Sc IT/CS for a meaningful career. If there are no personal conditions, you are advised to complete MCA or M.Sc CS/IT before seeking a job in IT industry. MCA and M.Sc CS/IT graduates are treated on par with B.Tech CS and B.Sc IT grads for Application development and Maintenance jobs.

Microbiology is a vast field and has lot of scope. Number of jobs exist in R&D as well as for managerial tasks.
Microbiologist can get jobs in many places like Research and Development Laboratories of Government and Private Hospitals, Research Organisations, Food, Beverage, Pharmaceutical and Chemical Industries.
After doing MSc. Microbiology, one can join R&D dept. of any good Biotech company.
You can also join research programmes after clearing UGC or CSIR NET exam & further go for Phd.
You can do specialization in Food microbiology,clinical or medical microbiology etc. depending upon your interest.
You can also get job after M.Scc microbiology in pharmaceuticals or in food industries or in breweries and also in pathology lab.

There are plenty of jobs in the airline industry that require good skills in hospitality management. One important one is flight attendant. Like a hotel clerk or a restaurant host or hostess, a flight attendant is a front line employee in their specific industry, providing one of the faces that the public sees the most. Ticketing agents at airport counters and airline employees who staff lounges for frequent flyers or club members are also important hospitality specialists. Since longer flights often serve meals, some airlines also hire culinary managers to plan in-flight food service. These are just some of the airline-related jobs you can find with a hospitality background. They may particularly appeal to you if you like to travel or if you don't mind living in or near big cities where major airports are located.