OSSC CHSL Syllabus 2025: The Odisha Staff Selection Commission (OSSC) has released the OSSC CHSL syllabus for both the prelims and mains exams. OSSC CHSL Prelims exam is scheduled to be held on February 16. Candidates should thoroughly review the syllabus for all subjects to effectively prepare for the exams. Understanding the exam syllabus will enable candidates to identify important topics and focus their preparation accordingly.
It is also essential for aspirants to acquaint themselves with the OSSC CHSL exam pattern to understand the question format, section distribution, and other exam requirements. A clear understanding of both the syllabus and exam pattern will assist candidates in covering the entire syllabus within the allotted time and allocate time for revision.
In this article, we have provided the direct link to download OSSC CHSL syllabus 2025 PDF, along with insights into exam strategy and recommended study materials to excel in the exam.
OSSC CHSL Syllabus 2025
Odisha Staff Selection Commission (OSSC) conducts a Combined Higher Secondary (10+2) Level examination for recruiting candidates for Specialist Posts/Services. Selection is based on performance in the prelims, mains, and certificate verification rounds. The OSSC CHSL Prelims syllabus includes one objective type paper, while the OSSC CHSL Mains syllabus varies depending on the specific technical papers required for different posts. Below, we have assembled the subject-wise syllabus for OSSC CHSL to assist aspirants in their preparation journey.
OSSC CHSL Exam Pattern 2025
Candidates must check the OSSC CHSL exam pattern to understand the exam structure, distribution of marks, number of questions and marking scheme specified by the authority. This will help them to align their strategy based on the exam requirements and trends. Check the weightage of the OSSC CHSL syllabus 2025 shared below.
- The OSSC CHSL prelims exam will be of MCQ type.
- There shall be a negative marking of 0.25 marks for each wrong answer in the exam.
| Stage | Type | Number of Paper | Total Marks |
| Stage I | Prelims | One MCQ type paper | 150 |
| Stage II | Mains | Technical Papers | 200 |
OSSC CHSL Syllabus 2025 PDF
Aspirants must check the OSSC CHSL Syllabus 2025 PDF from the link below to know the topics and their sub-topics important for the exam. Get the direct link to download the topic-wise OSSC CHSL syllabus below.
OSSC CHSL Syllabus 2025 PDF Download
OSSC CHSL Syllabus 2025 for Prelims and Mains
The OSSC CHSL syllabus is divided into two exams i.e. preliminary and mains exam. The prelims exam contains objective type questions whereas the mains exam comprises technical question paper. Reviewing the official syllabus is crucial to learn about the topics that need to be studied for the exam. Here is the subject-wise OSSC CHSL syllabus shared below for reference purposes.
OSSC CHSL Prelims Syllabus
The OSSC CHSL Prelims syllabus is divided into various sections such as Arithmetic, Data Interpretation, Logical Reasoning and Analytical Ability, General Mental Ability, and Current Events of National and International Importance and Computer Internet Awareness. Check the detailed OSSC CHSL syllabus for the prelims exam given below.
| Subject | Important Topics |
| Arithmetic | Simplification Decimals Ratio and Proportions Profit and Loss Fractions HCF LCM Percentage Simple & Compound Interest Mensuration Average Discount Time and Work Time and Distance, etc |
| Data Interpretation | Chart Graph Table Data Sufficiency |
| Logical Reasoning and Analytical Ability, General Mental Ability | Verbal and Non–Verbal types of reasoning Similarities Relationships Concepts Arithmetical Reasoning Analysis Judgment Decision Making Visual Memory Differences Space visualizations Problem-Solving Discrimination Observations Verbal and Figure Classification Arithmetical Number Series, etc |
| Current Events of National and International Importance | Polity Constitution Sports Art and Culture Environment Current Affairs Indian History Everyday Science Indian Geography Economics Scientific Research National/International Organizations, etc |
| Computer Internet Awareness | Office Software MS Word, MS Excel, MS Access, PowerPoint Computer Fundamentals Object-Oriented Designing MS Windows Basic Networking Concepts Uses of the Internet and Services on the Internet Communication Technology, etc |
OSSC CHSL Mains Syllabus
The Mains syllabus comprises different Technical Papers for different posts/services as per the qualification prescribed for the post. However, there might be a common Technical Paper for posts/services having the same minimum educational qualification and the same syllabus. Check the detailed OSSC CHSL syllabus for the mains exam given below.
| Post | Important topics |
| Technical Assistant |
|
| Amin | Concepts of Geometry & Mensuration
Interpretation of Maps
|
| Ayush Assistant |
|
| Soil Conservation Extension Worker |
|
Preparation Tips for OSSC CHSL Syllabus 2025
Candidates must be familiar with the OSSC CHSL syllabus and exam pattern as it will help them prepare a well-organized strategy for the upcoming exam.
- Analysing the syllabus is crucial to learn about the chapters that can be asked in the exam.
- Referring to the best books and study material is essential to clear the concepts of both basic and advanced-level topics.
- Practice mock tests and previous year papers to understand the trending topics along with weightage asked frequently in the exam.
- Maintain short notes for all the topics and revise them often to retain the concepts for a definite period.
Books for OSSC CHSL Preparation
Candidates must pick high-quality books and study materials to understand the concepts without any confusion. The right books will assist them in knowing all the aspects of the OSSC CHSL syllabus 2025. Here are the best books to score favourable scores in the exam.
- General Knowledge by Manohar Pandey
- Objective General English by SP Bakshi
- Quantitative Aptitude for Competitive Exams by Abhijit Guha
- A modern approach to Verbal Reasoning by RS Aggarwal
- Objective Computer Awareness by Arihant Experts
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