Civil Services Preliminary Exam has two papers where the marks of only Paper 1 (General Studies) and Included in the final merit for mains examination. General studies (Paper 1) mainly consists of the following subjects:-

HISTORY (Including Modern, Medieval and Ancient History)   

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POLITY FREE NOTES   

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ECONOMY

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GEOGRAPHY (Including Physical , Indian and World Geography)

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ENVIRONMENT

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CURRENT AFFAIRS

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There can be no single book to cover the entire current affair portion thus one must develop a habit of  reading the news paper, As such civilspreparation team will also provide daily current updates