How hard is UPSC exam?
A lot of people consider the IAS exam to be the toughest exam in India. This is because of the very low pass percentage here. Also, there is a huge syllabus (check the UPSC syllabus in the link) to be covered not to mention the variety of topics one has to learn for it.
Which is the easiest UPSC exam?
Medical Science. Literature Subject (Any) Anthropology. Public Administration. Psychology. Law. Geography. History.
Is UPSC main tough?
The UPSC Mains exam is very tough as compared to the prelims. Consider these stages as a hierarchy which only increases the challenging intensity with every level. Many think that the competition is lower in mains which is true.