CSIR Assistant Section Officer (ASO) Online Form 2026

The Council of Scientific and Industrial Research (CSIR) recruits Assistant Section Officers (ASO) for administrative and secretarial functions across its network of 37 national laboratories and 39 field stations throughout India. CSIR ASO is a Group B (Gazetted) post under the central government establishment. The role involves handling establishment matters, correspondence, file management, coordination between sections, and assisting senior officers in administrative decision-making. Selected candidates are posted at CSIR Headquarters in New Delhi or at any of its constituent laboratories spread across the country. This position offers excellent career growth prospects within India's premier R&D organisation with opportunities for interdepartmental transfers and promotions to higher administrative positions.

Important Dates

Vacancy Details (Typical / Indicative)

Note: Exact vacancy numbers vary by recruitment year. The above figures are representative based on recent CSIR ASO recruitments.

Educational Qualification

• Essential: Bachelor's degree in any discipline from a recognized University/Institution
• Desirable: Knowledge of computers and office procedures
• Candidates appearing in final year are NOT eligible to apply
• Degree obtained through Distance/Correspondence mode must be from UGC-recognized universities

Age Limit

Age as on closing date of application:

Additional Age Relaxations:

Nationality

• Candidate must be a citizen of India
• Certificate of citizenship issued by Government of India is mandatory at document verification stage

How to Apply Online

1. Visit the official CSIR website at www.csir.res.in or the designated recruitment portal
2. Click on "Careers" or "Recruitment" section and locate the CSIR ASO notification
3. Read the detailed notification and instructions carefully before proceeding
4. Click on "Apply Online" link which will redirect to the application portal
5. Register yourself by providing basic details (Name, Email ID, Mobile Number) to generate Registration ID and Password
6. Login using Registration credentials and fill the online application form with accurate personal, educational, and contact details
7. Upload scanned copies of recent passport-size photograph (4-6 KB, JPG format) and signature (2-4 KB, JPG format) as per specified dimensions
8. Upload scanned copies of required certificates (degree, caste certificate if applicable, PwBD certificate if applicable)
9. Proceed to fee payment section and pay the application fee through online mode (Credit Card/Debit Card/Net Banking/UPI)
10. After successful payment, submit the application form and take printout of the filled application for future reference
11. Note down the Registration Number/Application Number for tracking application status

Application Fee Structure

Payment Mode: Online only (Debit Card/Credit Card/Net Banking/UPI)

Note: Application fee is non-refundable under any circumstances.

Selection Stages

1. Computer Based Test (CBT): A single-tier online objective type examination covering General Intelligence & Reasoning, General Awareness, Quantitative Aptitude, and English Language. Duration of 2 hours with 120 questions carrying 120 marks. This is the primary screening stage.

1. Skill Test/Typing Test: Candidates shortlisted from CBT will be called for a skill test which includes typing test in English/Hindi at a prescribed speed (30 words per minute in English or 25 words per minute in Hindi). This test is qualifying in nature.

1. Document Verification: Candidates who qualify the Skill Test will be called for document verification where all original certificates (educational qualification, date of birth, caste certificate, experience certificate if any) will be verified against uploaded documents.

1. Medical Examination: Shortlisted candidates undergo medical examination to verify fitness for the post as per government medical standards. Medical fitness certificate from authorized government medical officer is required.

1. Final Merit List: Based on marks obtained in CBT, final merit list is prepared category-wise. Candidates are offered appointment as per merit rank and vacancy availability in respective categories.

Computer Based Test (CBT) Pattern

Exam Mode: Computer Based Test (CBT) - Online

Question Type: Multiple Choice Questions (MCQs) with 4 options each

Negative Marking: Yes, 0.25 marks will be deducted for each wrong answer

Qualifying Marks: Minimum 40% for General/EWS, 35% for OBC, 30% for SC/ST/PwBD candidates

Skill/Typing Test Pattern

Note: Candidate can choose either English or Hindi medium for typing test. Computer typing is mandatory. This test is qualifying only and marks are not added to final merit.

Detailed Syllabus

General Intelligence & Reasoning

• Analogies and Similarities
• Differences and Odd One Out
• Number Series, Letter Series, and Alpha-Numeric Series
• Coding and Decoding (Letter coding, Number coding, Substitution)
• Mathematical Operations and Arithmetical Reasoning
• Relationships and Family Tree
• Blood Relations
• Direction Sense Test and Distance Calculation
• Seating Arrangements (Linear, Circular, Rectangular)
• Syllogism and Logical Venn Diagrams
• Statement and Conclusions/Arguments/Assumptions
• Data Sufficiency
• Puzzles (Floor-based, Box-based, Scheduling)
• Input-Output and Coding-Decoding
• Ranking and Time Sequence
• Calendar and Clock Problems
• Cubes and Dice
• Paper Folding and Pattern Completion
• Mirror and Water Images

General Awareness

• Current Affairs (National and International) - Last 6 months
• Indian History (Ancient, Medieval, Modern, Freedom Struggle)
• Indian Geography (Physical, Economic, Social)
• Indian Polity and Constitution (Fundamental Rights, DPSP, Union and State Government, Amendments)
• Indian Economy (Five Year Plans, Budget, Banking, Currency, Economic Reforms)
• Science and Technology (Recent Developments, Space Programme, Defence Technology)
• Awards and Honours (National and International)
• Sports (Major tournaments, Winners, Venues)
• Books and Authors
• Important Days and Dates
• Indian Culture and Heritage
• Environmental Issues and Climate Change
• Government Schemes and Initiatives
• Scientific Research and CSIR's Contributions
• Important National and International Organizations

Quantitative Aptitude

• Number Systems (HCF, LCM, Divisibility, Factors)
• Simplification and Approximation (BODMAS, Fractions, Decimals)
• Percentages and Applications
• Profit and Loss (Cost Price, Selling Price, Discount, Marked Price)
• Simple Interest and Compound Interest
• Ratio and Proportion
• Partnership (Simple, Compound)
• Average, Mixture and Alligation
• Time and Work (Work Efficiency, Wages)
• Time, Speed and Distance
• Problems on Trains
• Boats and Streams
• Mensuration (Area, Volume, Perimeter of 2D and 3D figures)
• Data Interpretation (Tables, Bar Graphs, Line Graphs, Pie Charts)
• Data Sufficiency
• Permutation and Combination
• Probability
• Algebra (Linear Equations, Quadratic Equations)
• Trigonometry Basics

English Language

• Reading Comprehension (Passages with questions)
• Vocabulary (Synonyms, Antonyms, One Word Substitution)
• Grammar (Tenses, Articles, Prepositions, Conjunctions)
• Error Spotting and Sentence Correction
• Fill in the Blanks (Single and Double)
• Phrase Replacement and Sentence Improvement
• Cloze Test (Fill in blanks in a passage)
• Para Jumbles (Sentence Rearrangement)
• Idioms and Phrases
• Active and Passive Voice
• Direct and Indirect Speech
• Subject-Verb Agreement
• Sentence Formation and Reconstruction
• Spellings and Word Usage
• Paragraph Completion

Salary Structure (Typical / Indicative)

Additional Benefits:

• Annual Increment: 3% of Basic Pay every year
• Grade Pay upgradation through MACP after 10, 20, 30 years
• Medical facilities for self and dependents
• Leave Travel Concession (LTC) once in 2 years
• Pension benefits under National Pension System (NPS)
• Accommodation facilities at CSIR campuses (subject to availability)
• Children Education Allowance: ₹2,250 per child per month (max 2 children)
• Performance Related Pay (PRP) based on annual assessment

Note: Salary figures vary based on posting location, actual DA rate (revised quarterly), and applicable city classification for HRA.

CSIR Assistant Section Officers enjoy excellent career progression through departmental promotion channels and MACP (Modified Assured Career Progression) scheme. After gaining requisite experience and passing departmental examinations, ASOs can be promoted to Section Officer (Level-7), Under Secretary (Level-10), Deputy Secretary (Level-11), and eventually to Director level posts (Level-13 and above) within the CSIR administrative cadre. The organization also provides opportunities for deputation to other central government ministries, PSUs, and autonomous bodies, along with training programmes for skill enhancement and leadership development.

CSIR releases admit cards for the Computer Based Test approximately 10-15 days before the scheduled exam date on its official recruitment portal. Candidates must download their e-admit card by logging in with their registration number and password/date of birth. No physical admit card is sent by post. The admit card contains crucial details including candidate's name, photograph, exam date, time, venue address, and important instructions. Candidates must carry a printed copy of the admit card along with valid photo ID proof (Aadhaar Card/PAN Card/Voter ID/Driving License) to the examination centre.

CSIR declares CBT results within 45-60 days after the examination through its official website. Results are published in PDF format containing roll numbers of qualified candidates along with their scores and cut-off marks category-wise. Candidates can also check individual scorecard by logging into the recruitment portal. Shortlisted candidates are intimated via email and SMS about subsequent selection stages including skill test and document verification. Final selection list with merit ranking is published after completion of all selection stages and medical examination.

CSIR ASO cutoff marks vary each year based on exam difficulty level, number of vacancies, and candidates' performance. Typically, General category candidates need to score 50-60 marks out of 120 (42-50%), OBC candidates require 45-55 marks (38-46%), while SC/ST candidates need 35-45 marks (29-38%) to qualify the CBT stage. The cutoff is generally lower in skill test as it is qualifying in nature. Final merit cutoffs are usually 5-8 marks higher than qualifying cutoffs. Previous year trends show that scoring above 55-60 marks ensures a safe position for General category candidates.

Examination Centres

CSIR conducts the Assistant Section Officer examination at multiple centres across India:

North: Delhi NCR, Chandigarh, Lucknow, Jaipur, Dehradun, Jammu, Shimla, Agra, Meerut

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

East: Kolkata, Bhubaneswar, Patna, Ranchi, Guwahati, Cuttack, Jamshedpur

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

Northeast: Guwahati, Shillong, Imphal, Agartala, Dimapur

Central: Bhopal, Indore, Raipur, Jabalpur

Note: CSIR reserves the right to add/delete examination centres depending on number of candidates and administrative feasibility. Candidates can choose 3 preferred centres during application.