Hi

I am assuming that your question is in regarding with UPSC civil services examination because there we have prelims and Mains examination ,but in if you are asking about something else then feel free to let me know about it in comment section.

As, yoy want to know the topics which comes in prelims and the papers which are included in mains I would suggest you to go through UPSC syllabus  .Y ou can get complete UPSC civil services examination syllabus for both PRELIMS & MAINS by visiting our page in the link for which is provided below:-

https://competition.careers360.com/articles/upsc-ias-syllabus

Syllabus is different for each paper, to give you an idea of the syllabus ,gist of  syllabus is provided below :-

PRELIMS :-

It is objective paper and is of qualifying nature. Your prelims exam consist of 2 papers: -

-) general studies  1

-) general studies II ( csat )

You get 2 hours for each paper

MAIN :-

It is descriptive /written examination . There are a total of 9 papers  which are listed below:-

-)GS-I  :- You have to study

*indian heritage and culture

*History and geography of the world and society

-)GS-II :- it includes

* Governance,

*Polity

*Constitution,

*Social Justice and International Relations.

-) GS-III :- it includes

*Technology,

*Economic Development,

*Security and Disaster Management

*Bio-Diversity,

*Environment,

-) GS-IV :- it has

* Ethics

*Integrity

*Aptitude

-) compulsory indian language paper

-) english paper

-) essay paper

-) optional I paper

-) optional II paper

The compulsory indian language and english are qualifying in nature . You just need to qualify them. The marks obtained by you in these two papers will not be counted towards merit list.

Thank you