CSIR ASO Syllabus 2026 - Assessment pattern, Selection procedure & Subject-Wise Topics

CSIR ASO Syllabus and Exam Pattern 2026 - Overview

CSIR ASO Selection Process 2026

According to the latest notice, Selection for the ASO post is spread across three stages, along with test-takers must clear each stage to move to the next.

Interested applicants should know that, Stage 1 - Objective Papers: applicants attempt Paper I (General Awareness plus English Language along with Comprehension) in addition to Paper II (General Intelligence, Reasoning in addition to Mental Ability). Both are multiple-choice papers with negative marking.

The department has confirmed that, Stage 2 - Descriptive Paper: aspirants who clear Stage 1 attempt Paper III, a descriptive test in English or Hindi covering essay, precis, along with letter/application writing.

Stage 3 - Computer Proficiency Test (CPT): aspirants who meet the required threshold in Stage 2 take the CPT, a practical, computer-based test of office software skills. It is qualifying only CPT marks are not counted toward final merit, however aspirants must clear the prescribed minimum percentage for their category.

Final merit is drawn from the objective in addition to descriptive stages, with the CPT acting as a qualifying gate rather than a merit-scoring stage.

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CSIR ASO Exam Pattern 2026

Stage 1 & Stage 2: Written Exam Pattern

significant discrepancy to verify: The source material states in one place that "the CSIR exam comprises a total of 200 multiple-choice questions," while the stage-wise breakup above (taken from the same source) totals 350 objective questions across Paper I in addition to Paper II. I have not resolved this conflict by guessing applicants should confirm the exact question count against the department notice before relying on it.

Candidates should note that, Each wrong answer in the objective papers carries a deduction of 0.25 marks.

Stage 3: Computer Proficiency Test (CPT) Pattern

According to the latest notice, The CPT covers four practical areas:

Minimum Qualifying Marks (CPT) - Category Wise

Tie-Breaking Criteria

If applicants score equally, merit is decided in this order:

Interested applicants should know that, Older candidate ranked higher

As per the official update, Higher marks in the UPSC Civil Services (Main) Examination 2024, where applicable, ranked higher

Candidate who completed the required educational qualification earlier ranked higher

The conducting body has announced that, Alphabetical order of first name, if the tie still persists

CSIR ASO Syllabus 2026

The pen- as well as -paper test is split into three papers. Below is the subject-wise topic breakdown as found in available source material.

1. Paper I - General Awareness

History of India & Indian National Movement: Sources of Indian history, the Harappan civilisation, the Vedic along with Mauryan periods, the post-Mauryan period (200 BC-300 AD), Gupta along with post-Gupta society/economy/polity, medieval India from 750-1200, the Delhi Sultanate, the Mughals, the Marathas, medieval saints, 18th-century India, rise of regional powers, economic impact of British rule, the Indian Renaissance in addition to reform movements, early uprisings against the British, the Revolt of 1857, causes of the national movement, the neo-nationalist/extremist phase, as well as the beginning of the Gandhian era.

Constitution of India, Polity, Governance along with Social Justice:

Historical evolution, features, amendments along with basic structure of the Indian Constitution

Union-State functions, federal structure, devolution of powers to local levels

Candidates should note that, Comparison of India's constitutional scheme with other countries

Separation of powers, dispute redressal mechanisms in addition to institutions

Parliament along with State Legislatures structure, functioning, powers along with privileges

Appointments along with powers of Constitutional Bodies

The department has confirmed that, Structure along with functioning of the Executive as well as Judiciary; role of pressure groups

Government policies along with welfare schemes, including for vulnerable sections

Health, education in addition to human resource development

Role of NGOs, SHGs in addition to other stakeholders in development

Governance, transparency, accountability in addition to e-governance

Interested applicants should know that, Issues relating to poverty as well as hunger

The official notification states that, Current Events of National in addition to International Importance:

National: National issues, economy, polity, judiciary, environment, science along with technology, states, social schemes, sports, reports/committees/commissions, awards along with honours, accidents along with calamities, "firsts" in India

International: Major summits, international awards, "firsts" in the world, international leadership, reports along with committees, global geographical events

English Language and Comprehension (part of Paper I)

Candidates should note that, Comprehension passages

Transformation exercises (active-passive, direct-indirect, etc.)

Prepositions along with fill-in-the-blanks

Synonyms along with antonyms

Sentence correction as well as common errors

Interested applicants should know that, Punctuation, idioms along with phrases

2. Paper II - General Intelligence, Reasoning and Mental Ability

(A) General Intelligence & Reasoning and Mental Ability

Analogies, similarities as well as differences, space visualisation, problem-solving, analysis, judgement, decision-making, visual memory, discriminating observation, relationship concepts, arithmetical reasoning, verbal along with figure classification, arithmetical along with non-verbal number series, classification, coding-decoding, blood relations, direction sense, logical Venn diagrams, alphabet test, sitting arrangements, mathematical operations, inserting the missing character, ranking in addition to time-sequence tests, as well as requirements tests.

(B) Arithmetical and Numerical Ability

Simplification, decimals, data interpretation, fractions, LCM/HCF, ratio along with proportion, percentage, average, profit in addition to loss, discount, simple as well as compound interest, mensuration, time in addition to work, time as well as distance, in addition to reading tables/graphs.

(C) General Science

Physics: Mechanics, heat, magnetism, electricity, light, sound, modern physics

According to the latest notice, Chemistry: Composition of substances, atomic structure, radioactivity, chemical bonds, oxidation, acids/bases/salts, valency, gas laws, electrochemistry, thermochemistry, chemical kinetics, periodic classification, metals as well as non-metals, organic chemistry, alloys, fertilizers, cement

Biology: Plant diseases, plant tissue, plant genetics, cell biology, ecology, pollution, health as well as nutrition, human physiology, animal classification

It is informed that, Computer/IT: Basic computer fundamentals, word processing, spreadsheets, slide creation, email

(D) Economic & Social Development and Environmental Issues

Basic concepts of economy along with economics, resource distribution, macro in addition to micro economic policy, growth versus development, indices such as HDI, HPI/MPI, PQLI, GEM, GDI/GII as well as TAI, sustainable development, in addition to India's ranking on these indices. additionally covers climate change, ecosystems, natural disasters, as well as how environment topics link to geography, biology in addition to governance.

(E) Ethics and Human Interface

The department has confirmed that, Determinants as well as consequences of ethics in human actions, dimensions of ethics in private in addition to public relationships, human values drawn from the lives of leaders as well as reformers, along with the role of family, society as well as education in inculcating values.

(F) Decision Making and Problem Solving

Identifying the problem, identifying possible solutions, selecting the best solution, eliminating alternatives, as well as making the decision.

(G) Management Principles & Practices

Planning, organising, directing along with control; job analysis, description along with design; recruitment; communication; leadership; motivation; negotiation; financial management; delegation; project appraisal; procurement; stores as well as inventory management; facilities management.

(H) National Geography

Physical features of India, river systems, climate, minerals in addition to industries, agriculture, natural vegetation as well as fauna, economic infrastructure, in addition to human geography.

3. Paper III - English/Hindi Descriptive Paper

The department has confirmed that, Essay writing

Precis writing

The conducting body has announced that, Letter/application writing

How to Prepare for the CSIR ASO Exam 2026

Map the syllabus to a timetable first. Split preparation time across General Awareness, English, Reasoning as well as the descriptive paper based on the marks each carries (100, 50, 200 as well as 150 respectively), rather than spending equal time on all sections.

Prioritise Paper II. It carries the highest marks (200) among the objective papers, therefore reasoning in addition to mental ability topics deserve proportionally more practice sessions.

Practise CPT tasks on an actual computer, not just in theory. Since the CPT is a hands-on test of word processing, spreadsheets in addition to presentations, timed practice on real software matters more than reading about it.

The official notification states that, Build a current affairs habit early. Given the current events component in Paper I, follow a daily/weekly national in addition to international news digest rather than cramming close to the exam.

Time your descriptive writing. Practise essay, precis as well as letter writing within the 2-hour limit therefore pacing itself doesn't cost marks in Stage 2.

Revise negative-marking-prone areas. With a 0.25 deduction per wrong answer in objective papers, attempt only questions you're reasonably confident about, as well as use mock tests to gauge your safe attempt count.

Important Links

CSIR ASO Syllabus PDF: Follow this link

Department website: csir.res.in