CSIR NIO Syllabus and Exam Pattern 2025: The CSIR-National Institute of Oceanography has announced 25 vacancies for the Junior Secretariat Assistant and Junior Stenographer posts. The last date to apply online for these administrative posts is June 24, 2025. The candidates will be selected for the post based on their performance in the written exam and proficiency test in computer/Stenography. As per the official notification, the written exam is tentatively scheduled in the 1st week of July 2025. As the examination is around the corner, candidates must check the syllabus and begin their preparation at the earliest.
Typically, the CSIR NIO syllabus is divided into three subjects, i.e. Mental Ability Test/General Intelligence & Reasoning, General Awareness, and English Language. Candidates must also check the CSIR NIO exam pattern to understand the exam requirements and scoring parameters in a detailed manner. The competitive written examination consists of 200 objective-type questions. However, the exam pattern for both posts differs in terms of maximum marks, exam duration, marking scheme, and other parameters. Read on to get complete details of the CSIR NIO Exam Pattern and Syllabus 2025 on this page.
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CSIR NIO Syllabus and Exam Pattern 2025 Highlights
The CSIR-National Institute of Oceanography has released the CSIR NIO Exam Pattern for all the posts in the official notification. Aspirants should be well aware of the exam format, syllabus, and marking scheme during the preparation to strategise well. Here are the key highlights of the CSIR NIO syllabus and pattern shared below for the candidate’s reference.
| Particular | Details |
| Exam Conducting Body | CSIR-National Institute of Oceanography |
| Post Name | Junior Secretariat Assistant and Junior Stenographer |
| Vacancy | 25 |
| Selection Process | Written Exam and Proficiency test in computer/Stenography |
| Mode of Examination | OMR-based or computer-based objective-type multiple-choice examination |
| Medium of Question | English and Hindi except the questions on English Language |
| Standard of Exam | 10+2/Class XII |
| Total Number of Questions | 200 |
| Negative Marking | Yes |
CSIR NIO Exam Pattern 2025 for Junior Secretariat Assistant (Gen/F&A/S&P)
The CSIR NIO JSA exam consists of two papers, i.e. Paper I and Paper II. Paper I is qualifying in nature, and Paper II will be assessed for only those candidates who secure the minimum threshold marks in Paper I. There shall be no negative marking in Paper I, whereas 1 mark shall be deducted for every wrong answer in Paper II. Check the complete CSIR NIO JSA Exam Pattern 2025 in the table below:
| Paper | Subject | Number of Questions | Maximum Marks | Exam Duration |
| Paper I | Mental Ability Test | 100 | 200 | 90 minutes |
| Paper II | General Awareness | 50 | 150 | 1 hour |
| English Language | 50 | 150 |
CSIR NIO Exam Pattern 2025 for Junior Stenographer
The CSIR NIO Junior Stenographer exam will consist only of one paper with three parts, i.e. General Intelligence & Reasoning, General Awareness, and English Language & Comprehension. It consists of 200 multiple-choice questions for 200 marks. The exam duration shall be 2 hours. As per the marking scheme, each question carries 1 mark, and a negative marking of 0.25 marks is applicable for every wrong answer. Check the CSIR NIO Exam Pattern 2025 for the Junior Stenographer post shared below:
| Subject | No. of Questions | Maximum Marks | Exam Duration |
| General Intelligence & Reasoning | 50 | 50 | 2 hours (2 hours and 40 minutes for PwBD candidates eligible for scribe) |
| General Awareness | 50 | 50 | |
| English Language & Comprehension | 100 | 100 |
CSIR NIO Syllabus PDF
Free access to the CSIR NIO syllabus PDF helps candidates streamline their exam preparation. It enables them to focus only on the exam-relevant chapters and customise their study plan accordingly. Get the direct link to download the CSIR NIO JSA Syllabus PDF on this page.
| CSIR-NIO Syllabus |
CSIR NIO Syllabus 2025 Subject-Wise Topics
The CSIR NIO syllabus is divided into three subjects, i.e. Mental Ability Test/General Intelligence & Reasoning, General Awareness, and English Language. It is based on the 10+2/Class XII standard level. Aspirants must master all the topics to improve their chances of achieving high scores in the competitive written exam. To help, we have shared below the important topics for all subjects to ease the candidate’s preparation:
| Subject | Important Topics |
| English Language & Comprehension | Vocabulary Analogies Paragraph Formation Preposition Odd Word Out Paragraph Completion Sentence Correction Fill in the Blanks Sentence Improvement Error Spotting Word Meaning Match Reading Comprehension Spelling Mistakes Synonyms & Antonyms One Word Substitution Rearrangement of Words in Sentence Sentence Formation Sentence Completion Sentence Reconstruction Idioms and Phrases English Proficiency Jumbled Paragraph, etc |
| Mental Ability Test | General Intelligence & Reasoning Partnership Blood Relations Verbal Logic Syllogisms Statement & Conclusion Decision Making Data Structures Input & Output Family Tree Problem Coding-Decoding Alphabetical Series Visual & Critical Reasoning Series Problem Solving Linear & Matrix Arrangements Circular Arrangements Bar Graph Pie Chart Tables Puzzles Caselets Situational Judgement, etc Quantitative Aptitude Percentages Ratios Median Number System Simple Interest Compound interest Vectors Coordinate geometry Venn Diagram HCF & LCM Arithmetic Progression BODMAS Binomial Expansion Profit & Loss Calendar Permutation & Combination Mode Arithmetic Mean Trigonometry Time, Speed, Distance Ratios & Proportions Mensuration Harmonic Mean Set Theory Geometric Mean Linear Equations Algebra Geometric Progression Logarithm Probability Geometry Work & Time Averages Probability Clocks, etc |
| General Awareness | National and International Affairs Politics Awards & Awardees Business Mythology General Science Society Geography Literature Banking Current Affairs Films Sports Economics History, etc |
How to Cover the CSIR NIO Syllabus 2025?
Candidates must integrate smart planning, resources, and consistency when preparing for the CSIR NIO exam. This can help them solidify their concepts and get ample time to revise high-priority topics. Here are a few important tips to cover the CSIR NIO syllabus shared below:
- Analyse the CSIR NIO Exam Pattern and Syllabus thoroughly to identify the test format and important topics for all subjects.
- Prepare a timetable that includes coverage of basic concepts, unlimited practice and daily revision sessions.
- Practice mock tests and previous papers to boost your speed, Problem-Solving skills, Situational Judgment skills, accuracy, and time management.
- Revise all the topics regularly to retain information for a definite period.
Best Books for CSIR NIO Preparation 2025
Get your hands on the best CSIR NIO exam books to clearly understand all the concepts and practice unlimited questions to achieve mastery. Some of the best books for CSIR NIO preparation are listed below:
- Manorama Year Book by Mammen Mathew
- Lucent General Knowledge
- Quantitative Aptitude for Competitive Examinations by RS Aggarwal
- Word Power Made Easy by Norman Lewis
- A Modern Approach to Logical Reasoning by R S Aggrawal
- Analytical Reasoning by MK Pandey
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