As you have asked about the syllabus of General knowledge section of Tamil Nadu Public Service Commission (TNPSC) preliminary exam, I am giving you information about it, check below for the details

The paper on general knowledge will include questions covering the following fields of knowledge. General Science, current events of national and international importance, history and culture of India, geography, Indian Polity, Indian economy, Indian National Movement and Freedom struggle, Mental ability tests and other related fields.

Questions on general science will cover general appreciation and understanding of science, including matters of every day observation and experience as may be expected of a well educated person who has not made a special study of any scientific discipline.

In history emphasis will be on broad general understanding of the subject in its social, economic, political aspects; social and cultural heritage of India emphasizing unity in diversity.

Questions on Tamil, Tamil Nadu, Language and Literature, Culture and heritage of its people.

In geography emphasis will be on geography of India including the physical, social, economic, geography and on the main features of Indian agriculture and natural resources.

Questions on Indian polity and economy will test knowledge on the country’s political, executive, Judicial System, Panchayat raj, Rural and Community Development and Economic Planning in India.

Questions on Indian National Movement will relate to the nature and character of the Nineteenth century resurgence, growth of nationalism and attainment of independence.

General mental ability test will include analysis of classified data, logical and behavioural reasoning, analogies, school arithmetic, numerical ability and basic concepts of computers.

Current events will include latest developments on all the fields detailed above including science and technology