UPSC CSE Syllabus 2020 for Preliminary & Main Examination. Check the detailed syllabus for IAS exam which is scheduled to be held on 31 May 2020. Here we are sharing IAS syllabus in Hindi & English along with PDF Downloads for both Pre & Mains. UPSC CSE is the most competitive as is conducted nationwide to recruit various All India Services and Central Services of the Government of India. The most coveted services include IAS, IPS, IFS, and IRS among others. Candidates preparing for the UPSC CSE are advised to once go through the syllabus for both Prelims & Mains. Take a hint from the previous year papers on most commonly asked topics of both phases and make the exam preparation effective and result oriented.