UPSC Civil Services Mains Exam New Pattern: Union Public Service Commission notified The Civil Services Examination 2013 advertisement. UPSC has changed the Examination pattern for Civil Services Prelims (CSP) Examination from 2013. However mains examination of both the services will be conducted separately. In Civil Services mains Examination 2013 instead of two optional papers, now student will opt only one optional paper. Weight-age of General Study has been increased. 
UPSC Civil Services 2013 Notification

Main Examination
The written examination will consist of the following papers:
Paper-I
Section 1 Essay 200 Marks
Section 2 English Comprehension & English Précis 100 Marks (Of Matriculation/ Xth standard level)
Paper-II
General Studies–I 250Marks (Indian Heritage and Culture, History and Geography of the World and Society)
Paper-III
General Studies –II: 250 Marks
(Governance, Constitution, Polity, Social Justice and International relations)
Paper-IV
General Studies –III 250 Marks (Technology, Economic Development, Bio-diversity, Environment, Security and Disaster Management)
Paper-V
General Studies –IV 250 Marks (Ethics, Integrity and Aptitude)
Paper-VI
Optional Subject – Paper 1 250 Marks
Paper-VII
Optional Subject – Paper 2 250 Marks
Sub Total (Written test) 1800 Marks
Personality Test 275 Marks.
Grand Total 2075 Marks
{Candidates may choose any optional subject from amongst the list of subjects given in para 2 below (Group 1). However, a candidate can opt for the literatures of a language, indicated in Group-2 below para 2, as an optional subject, only if the candidate has graduated in the literature of that particular language as the main subject}. NOTE: (i) Marks obtained by the candidates for all papers (Paper I-VII) will be counted for merit ranking. However, the Commission will have the discretion to fix qualifying marks in any or all papers of the examination.
For Official UPSC Notification CLICK HERE