Course comparison

It depends on your interest and effort you put into a field. Maybe mechanics is little harder for some because you may not 'be good' at all the disciplines (programming is totally different than, say, Material Science), but you're not learning everything to an advanced level, so it's not that bad. Other courses are also pretty widespread, they just focus on things related to the main theme (f. e. Mechanical Engineering courses involve technology, welding, material Science, bearings knowledge and so on), whereas mechatronics have more distinct disciplines (brief survey of the mentioned ones, electronics, a bit of programming, etc).
Civil Engineering
It is a specialised branch of engineering that deals specifically with infrastructure. This includes the design, construction and maintenance of the physical structures including roads, bridges, buildings, dams and canals. Civil engineering is the second the oldest engineering category and is many times broken down into several sub-categories including, but not limited to, architectural, environmental, forensic, water resources, offshore and construction. Civil engineering occurs in the public sector and is found in municipalities as well as national governments. It is also found in the private sector where homeowners and large companies seek them out for their expertise.
Your interest matters.

Bachelor of Pharmacy is an undergraduate pharmacy course and Doctor of pharmacy is a professional pharmacy doctoral course. Both the courses have their own significance as B.Pharma is 4 years course where as Pharma. D is a 6 years course. While Pharma. D. focuses on clinical practise and allows the student to get a hands-on experience while working as a pharmacist, B.Pharma. Is more research oriented and as mentioned above it focuses on the manufacture of drugs and what new discoveries can be made in this field. After the completion of B.Pharma. the students can practice as a Pharmacist. Pharmacists will work in industries related to the prescription, manufacture & provision of medicines. And Pharma. D trains students to work in hospital settings, relevant industry environments and to pursue higher degrees or clinical research. After the completion of the B.Pharma course, students can go for higher studies in the Pharmacy like Master of Pharmacy M.Pharma or can work in a Pharmaceutical company or can practice as a Pharmacist in various firms Where as After earning a Doctor of Pharmacy degree and passing licensure examinations, College of Pharmacy graduates can practice pharmacy anywhere the country. If you are a student who wishes to work as a pharmacist in big hospitals and healthcare clinics whether it is in your homeland or in countries abroad, then a Pharma.D. course would be better for you. You can also pursue your Ph.D. after completing Pharma.D. if you are interested in doing further clinical research work.