UPSC Civil Services Preliminary exam comprises of two compulsory papers of 200 marks each (General Studies Paper I and General Studies Paper II). The questions will be of multiple choice, objective type. The marks in prelims will not be counted for final ranking, but just for qualification for the main exam.

The Commission will draw a list of candidates to be qualified for Civil Service (Main) Examination based on the criterion of minimum qualifying marks of 33% in General Studies Paper II of Civil Services (Preliminary) Examination and total qualifying marks of General Studies Paper-I of Civil Services (Preliminary) Examination as may be determined by the Commission.

UPSC Syllabus for Paper I
(200 marks) Duration: 2 hours (Counted for the merit rank in the Prelims)
Current events of national and international importance.
History of India and Indian National Movement.
Indian and World Geography – Physical, Social, Economic Geography of India and the World.
Indian Polity and Governance – Constitution, Political System, Panchayati Raj, Public Policy, Rights Issues, etc.
Economic and Social Development Sustainable Development, Poverty, Inclusion, Demographics, Social Sector initiatives, etc.
General issues on Environmental Ecology, Bio-diversity and Climate Change – that do not require subject specialization.
General Science..