CSIR Assistant Section Officer (ASO) Online Form 2026

The Council of Scientific and Industrial Research (CSIR) conducts the Assistant Section Officer (ASO) examination to recruit candidates for ministerial and administrative positions across its network of 37 national laboratories and institutes spread throughout India. The ASO position is a Group 'B' non-gazetted ministerial post under the Government of India. Selected candidates serve in various CSIR establishments handling office administration, correspondence, file management, and coordination activities. This All India recruitment provides career opportunities in India's premier research organization with central government benefits. The exam follows a competitive selection process with prelims, mains and interview stages. CSIR ASO officers play a crucial role in the smooth administrative functioning of scientific research institutions.

Important Dates (Indicative)

Vacancy Breakdown (Typical / Indicative)

Note: Actual vacancies vary by year and are subject to organizational requirements. Some posts may be reserved for PwBD candidates.

Educational Qualification

• Essential: Bachelor's degree in any discipline from a recognized University or Institute
• Candidates appearing in final year examination are also eligible to apply
• Final degree certificate must be produced at the time of document verification
• Equivalent qualifications recognized by AICTE/UGC are acceptable

Age Limit

Age as on closing date of application:

Age Relaxation:

Nationality

• Indian Citizens only
• Candidates must be citizens of India as defined by Government of India

Application Process

1. Visit the official CSIR recruitment portal at www.csir.res.in or www.csirhrdg.res.in
2. Click on the "Careers" or "Recruitment" section and locate the CSIR ASO 2026 notification link
3. Read the detailed notification PDF carefully including all instructions and eligibility criteria
4. Click on "Apply Online" link and register as a new user with valid email ID and mobile number
5. Verify your email and mobile through OTP received
6. Login with generated credentials and fill the online application form with personal, educational and contact details
7. Upload scanned copies of recent passport photograph (JPEG, less than 50KB) and signature (JPEG, less than 30KB) as per specifications
8. Upload scanned documents: educational certificates, category certificate (if applicable), PwBD certificate (if applicable)
9. Review the complete application form carefully before final submission
10. Pay the application fee through online mode (Net Banking/Debit Card/Credit Card/UPI)
11. After successful payment, submit the application form
12. Download and save the application form confirmation page with payment receipt for future reference
13. Take multiple printouts of the submitted application form for record purposes

Application Fees

Note: Application fees are non-refundable. Payment gateway charges as applicable extra.

Selection Process

The CSIR ASO selection process consists of multiple stages:

1. Preliminary Examination (Screening Test): An objective-type computer-based test covering General Intelligence, General Awareness, Numerical Aptitude and English Language. This is a qualifying exam to shortlist candidates for Mains examination. Marks obtained in Prelims are not counted for final merit.

1. Main Examination (Computer Based Test): A comprehensive computer-based objective test covering similar subjects but with higher difficulty level. Questions test in-depth knowledge and analytical ability. Marks obtained in Mains constitute 85% weightage in the final merit list.

1. Skill Test/Typing Test: Qualified candidates from Mains are called for typing test in English at a speed of 35 words per minute or Hindi at 30 words per minute on computer. This is a qualifying test and candidates must achieve minimum qualifying standards.

1. Document Verification: Shortlisted candidates undergo document verification where original certificates of educational qualification, age proof, category certificate, experience certificate (if any) and other relevant documents are verified by the recruitment committee.

1. Personal Interview: Final stage where candidates appear before an expert panel for assessment of personality, communication skills, general awareness, suitability for the post and subject knowledge. Interview carries 15% weightage in final merit calculation.

1. Medical Examination: Finally selected candidates undergo medical fitness examination to ensure they meet the prescribed medical standards for government service.

1. Final Merit List: Prepared based on combined marks of Mains (85%) and Interview (15%). Category-wise merit lists are prepared and appointments offered accordingly.

Preliminary Examination Pattern

Negative Marking: 0.25 marks deducted for each wrong answer.

Main Examination Pattern

Negative Marking: 0.25 marks deducted for each wrong answer.

Note: Both Prelims and Mains are computer-based objective tests. Questions are multiple-choice with four options. Medium of examination is bilingual (Hindi and English) except for English Language section.

Detailed Syllabus

General Intelligence & Reasoning

• Analogies and Similarities
• Differences and Classifications
• Series Completion (Number, Letter, Figure)
• Coding-Decoding (Letter, Number, Substitution)
• Blood Relations and Family Tree
• Direction Sense and Distance
• Ranking and Arrangement
• Syllogism and Statements
• Logical Venn Diagrams
• Alphabetical and Number Series
• Mathematical Operations and Inequalities
• Puzzle and Seating Arrangement
• Data Sufficiency
• Logical Deduction
• Statement and Conclusions/Assumptions
• Figure Matrix and Pattern Completion
• Mirror and Water Images
• Paper Folding and Cutting
• Embedded Figures
• Critical Thinking

General Awareness

• Indian History (Ancient, Medieval, Modern)
• Indian National Movement and Freedom Struggle
• Indian Polity and Constitution
• Indian Economy and Economic Development
• Indian Geography (Physical, Economic, Social)
• World Geography and Environmental Science
• General Science (Physics, Chemistry, Biology)
• Scientific Research and Developments
• CSIR Organization Structure and Functions
• CSIR Laboratories and Research Areas
• Current Affairs (National and International)
• Important Days, Events and Personalities
• Books and Authors
• Awards and Honours
• Sports and Games
• Art and Culture of India
• Government Schemes and Initiatives
• International Organizations
• Banking and Financial Awareness
• Static GK (Capitals, Currencies, Important Places)

Numerical Aptitude

• Number System and Simplification
• HCF and LCM
• Percentages and Fractions
• Ratio and Proportion
• Average and Mixtures
• Profit, Loss and Discount
• Simple Interest and Compound Interest
• Time and Work
• Time, Speed and Distance
• Boats and Streams
• Pipes and Cisterns
• Area and Perimeter
• Volume and Surface Area
• Algebra (Linear Equations, Quadratic Equations)
• Trigonometry (Basic Ratios and Identities)
• Geometry (Lines, Angles, Triangles, Circles)
• Mensuration
• Data Interpretation (Tables, Bar Graphs, Line Charts, Pie Charts)
• Data Sufficiency
• Probability and Permutation-Combination

English Language & Comprehension

• Reading Comprehension (Passage-based questions)
• Vocabulary (Synonyms and Antonyms)
• One Word Substitution
• Idioms and Phrases
• Grammar (Tenses, Articles, Prepositions)
• Subject-Verb Agreement
• Active and Passive Voice
• Direct and Indirect Speech
• Sentence Improvement
• Error Spotting and Sentence Correction
• Fill in the Blanks
• Cloze Test
• Para Jumbles (Sentence Rearrangement)
• Sentence Completion
• Spelling Correction
• Homonyms and Homophones
• Contextual Usage of Words
• Coherent Paragraph Formation

Typing Test Syllabus

• English Typing: 35 words per minute (10 minutes duration)
• Hindi Typing: 30 words per minute (10 minutes duration)
• Candidates can choose either English or Hindi medium
• Typing test is qualifying in nature

Salary Structure (Typical / Indicative)

Additional Benefits:

• Dearness Allowance (revised twice yearly based on inflation)
• City Compensatory Allowance (as applicable)
• Medical facilities for self and dependents
• Leave Travel Concession (LTC)
• General Provident Fund (GPF) and NPS benefits
• Group Insurance Scheme
• Children Education Allowance
• Residential accommodation (subject to availability) or HRA
• Annual increment and performance-linked incentives
• Pension benefits under National Pension System

Note: Salary figures are indicative based on 7th Pay Commission recommendations. DA percentages are revised periodically. Actual in-hand salary varies based on location, deductions (GPF, NPS, income tax) and allowances applicable.

CSIR ASO officers have excellent career progression opportunities within the organization. After gaining experience, ASOs can be promoted to Administrative Officer (AO) positions in Level 7, and further to Senior Administrative Officer and Deputy Registrar positions. With consistent performance and completion of required service periods, officers can reach up to the level of Registrar or equivalent positions in Level 12-13 of the pay matrix, managing entire administrative wings of CSIR laboratories.

Admit cards for CSIR ASO Prelims examination are typically released 2-3 weeks before the scheduled exam date on the official CSIR recruitment portal. Candidates must download their admit cards using registration number and date of birth/password from the online application system. No physical admit cards are sent by post. The admit card contains important details including exam date, time, venue address, reporting time and candidate's photograph. Candidates must carry the printed admit card along with valid photo ID proof (Aadhaar, PAN, Voter ID, Passport, Driving License) to the examination centre. Similarly, Mains exam admit cards are issued separately for qualified candidates.

CSIR ASO Prelims result is declared approximately 3-4 weeks after the examination on the official website with category-wise cut-off marks. Qualified candidates can download their Mains exam admit card using their credentials. The Mains examination result is announced 4-6 weeks after the exam, publishing the list of candidates shortlisted for typing test and interview along with their scores. Final result with merit list is published after completion of interview process, typically 2-3 months after Mains exam. Candidates can check their results online using registration number and date of birth.

CSIR ASO cutoff marks vary each year based on vacancy numbers, difficulty level and number of candidates appearing. Typically, for Prelims qualifying, General category candidates need to score around 55-65 marks out of 100, OBC candidates around 50-60 marks, and SC/ST candidates around 40-50 marks. For Mains examination and final selection, cutoffs are generally higher with General category requiring 240-280 marks out of 400, OBC around 220-260 marks, and SC/ST around 180-220 marks. The final merit is prepared based on combined marks of Mains (85%) and Interview (15%). Cutoffs fluctuate based on normalization and overall performance distribution.

Examination Centres

CSIR ASO examination is conducted across major cities in India:

North India: Delhi NCR, Chandigarh, Lucknow, Kanpur, Allahabad, Dehradun, Jammu, Shimla, Jaipur

South India: Bangalore, Chennai, Hyderabad, Thiruvananthapuram, Kochi, Mysore, Coimbatore, Visakhapatnam

East India: Kolkata, Bhubaneswar, Patna, Ranchi, Durgapur, Bhopal, Raipur

West India: Mumbai, Pune, Ahmedabad, Nagpur, Indore, Surat, Vadodara

Northeast India: Guwahati, Shillong, Imphal, Jorhat

Note: Allotment of exam centre is subject to availability and administrative feasibility. Candidates should select 3-4 preferred centres during application. Final centre is assigned by CSIR and mentioned on the admit card.