Our Curriculum

Welcome to the Ray’s IAS. Preparing for the prestigious OPSC Civil Services examination is a demanding, yet deeply enriching experience. It is an examination that aims to choose the best talent for a career in public services of the Union of India. Aspirants who begin this journey, naturally find themselves having many questions and few answers. They are usually in search for the best IAS coaching study material. To answer all your questions about OPSC Civil Services Exam 2020 and how to prepare, we RAY’S IAS bring together all the OPSC related news, current affairs notes, video-based lectures on trending topics in the news, exam strategy focused articles (OPSC mock tests) and much more in a single and convenient space for you in a way that you won’t forget.


The Civil Services Mains examination aims to test the academic talent and the ability of the candidate to present the answers in a clear and coherent manner. The Examination is intended to assess the overall intellectual traits and understanding of the concepts rather than merely to check their information and memory.

Click on the subject name for syllabus reference.


Geography is the important subject as far as the CSE and OPSC exam is concerned. Its rational nature and scoring ability make it especially popular among candidates with both science and arts backgrounds. But even if you don’t opt for Geography optional, you cannot escape studying Geography if you want to clear the IAS exam.


If you are preparing to take the OPSC civil services exam you will know that economics is an unavoidable part of the OPSC syllabus – both the IAS prelims and the mains.We will cover the economics syllabus for OPSC Prelims, mains, along with a few tips on how to tackle the topics under this section.


Polity is an integral part of the OPSC civil services exam. Whether it is for the OPSC prelims or the OPSC mains exam, Indian polity is a vital part of the OPSC syllabus.It is the subject from which most questions were asked. Political science and international relations is also a subject that you can opt as an optional subject.


History is the main topic in OPSC IAS Prelims and mains Examination. Approximately 10-15 questions are asked on History every year. If you are thorough with the dates, place, and events in a chronological order History is an easy subject. It does not contain any principle, theory or any concepts like other general studies subjects.


Chemistry and Botany for OPSC is highly specialised and the syllabus is suitable for candidates with science background. The Chemistry syllabus focuses on the atomic structure and atomic structure, states of matter, different kinds of reactions etc.The Botany syllabus for IAS Exam tests the candidates’ ability to understand the subject as science and apply botanical knowledge to ecological problems.


Environment and biodiversity are integral topics in the OPSC exam. Both the IAS Prelims syllabus and the IAS mains mention these topics.General issues on Environmental Ecology, Biodiversity and Climate Change – that do not require subject specialization General Science.


The OPSC allows English as an optional subject in the Civil Services Exam. The English Literature syllabus for OPSC Mains is vast and covers literature from old English used during the medieval and early modern period as well as modern English used from 1900 AD onwards. The English language is also one of the compulsory language papers in OPSC Mains


Maths is and has always been a scoring subject, be it in the OPSC exams or any other exam. If you have prepared well and have written the answers correctly, you will most definitely score high marks.The questions in this paper are generally taken directly from the text books. Any good maths graduate should find the questions of an easy to medium difficulty level.