B.Sc

All the options i.e. B.Sc.(agriculture) from a government college in Madhya Pradesh, B.Tech (biomedical engineering) or B.Tech Biotechnology from VIT, Vellore or B. Pharma./Pharma.D from Manipal are outstanding provided admission is secured in either of the said courses. However, in case, the author is able to get admission in all of the said courses, then, in my opinion, the following should be the order of the priority though primarily it depends on the aptitude and willingness of the author to do outstanding hard work in the chosen course-
1. B.Sc. (agriculture) from a government college (because it is a government college and admission will be based on the merit basis).
2. B.Tech. Biotechnology from VIT, Vellore
3. B.Tech (biomedical engineering) from VIT, Vellore
4. B. Pharma. from Manipal
5. Pharma. D. from Manipal
It may be noted that one bird in the hand is always better than two in the bush. Therefore, whatever course is available out of above, should be taken and outstanding hard work should be done to clear the course by securing at least one among top five positions.
There is nothing like best in absolute terms. The one in which a student is able to get admission is best for him/her.
Also, at this stage, the person need not think about salary or Ph.D, etc. The future will depend on the performance at graduation level. Therefore, the best possible efforts should be made at graduation level. Salary will depend on the amount of hard work put in the studies during graduation level.

An aeronautical engineer is crucial in the research, design, development and performance testing of commercial and military aeroplanes and weapon systems. Aeronautical engineers improve flight safety and fuel efficiency, develop control systems, analyse new materials and use advanced technologies to meet customer needs and reduce the environmental impact of air commute.
Coming to the next question, scope of aeronautical engineering in India. This is a difficult question to answer in every aspect, of course, you get a lot of opportunities in government sector but it isn't enough. I guess nothing is enough and that shouldn't stop you from taking up this course or profession if you are passionate about it and things involved interests you.
What all can I do after aeronautical engineering?
Maintenance of Aircraft - aerospace engineers test new aerodynamic and aviation systems, and maintain them.
Aircraft Designer - aerospace engineers specialising in this field deal with designing, constructing, and testing aircraft, missiles, and space crafts. They may conduct basic and applied research to evaluate adaptability of materials and equipment to aircraft design and manufacture.
Aviation Engineer- aerospace engineers in this field deal with the airport design, aircraft navigation technologies, and aerodrome planning.
Defence - aeronautical engineers in this field deal with creation, maintenance and deployment of defence aircraft such as fighter jets, choppers, bombers, etc. Also, the job requires being able to handle such aircraft at necessary times.
Where all can I work?
As everyone here mentioned right, you can work in the government sector with ISRO, DRDO, HAL, etc. And then we can look at private companies such as L & T, Godrej & Boyce Aerospace, Boeing, Airbus, Mahindra, etc
You can also go for Indian Airforce and Indian Navy.
I hope, it will help you.