The DSSSB ASO Syllabus 2026 is now available following the release of the official notification (Advt. No. 01/2026) on February 20, 2026, by the Delhi Subordinate Services Selection Board (DSSSB).
This recruitment targets Assistant Section Officer (Grade-II GNCTDSS/ASO) posts, with approximately 576–587 vacancies among the total 911 announced for various roles like JE, AE, and Legal Assistant.
DSSSB conducts the Assistant Section Officer (ASO) recruitment to fill administrative positions in Delhi Government departments. The selection involves a two-tier exam emphasizing general aptitude, language skills, administrative knowledge, and drafting abilities.
DSSSB ASO Exam Overview
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Post Name: Assistant Section Officer (ASO) / Grade-II (GNCTDSS)
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Conducting Body: Delhi Subordinate Services Selection Board (DSSSB)
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Exam Mode: Online CBT (objective for Tier I; objective/descriptive for Tier II as per scheme)
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Exam Phases: Tier I (objective) and Tier II (as per Two-Tier General pattern)
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Official Website: dsssb.delhi.gov.in
DSSSB ASO Syllabus 2026
The syllabus aligns with the standard Two-Tier General pattern for administrative posts like ASO.
Tier I (Objective – One-Tier Screening)
This section tests foundational skills with 200 MCQs (200 marks, 2 hours).
General Awareness
- Current events (national & international), History, Geography, Indian Polity & Constitution, Economy, General Science, Scientific research basics, Social issues, Environment, Delhi-specific governance and schemes.
General Intelligence & Reasoning Ability
- Analogies, similarities/differences, Spatial visualization/orientation, Problem-solving, Analysis, Judgment, Decision-making, Visual memory, Discrimination, Observation, Relationship concepts, Arithmetical reasoning, Number series, Coding-decoding, Syllogism, Puzzles.
Arithmetical & Numerical Ability
- Number systems, Simplification, Decimals/fractions, LCM/HCF, Ratio & proportion, Percentage, Average, Profit & loss, Discount, Simple & compound interest, Time & work, Time & distance, Data interpretation (tables, graphs, charts), Mensuration (2D & basic 3D).
Hindi Language & Comprehension
- Vocabulary, Grammar, Idioms & phrases, Synonyms/antonyms, One-word substitution, Sentence structure, Spotting errors, Reading comprehension.
English Language & Comprehension
- Vocabulary, Word usage, Idioms & phrases, Grammar (tenses, articles, prepositions, voice, narration, subject-verb agreement), Error detection, Sentence improvement, Fill in the blanks, Cloze test, Reading comprehension.
Tier II (Two-Tier General – Descriptive & Advanced)
Follows the standard scheme for posts like ASO/Grade-II DASS: Tier I as above, followed by Tier II (3 hours, total ~275 marks including descriptive).
Part I (MCQ – 200 marks):
- General Intelligence & Reasoning (50 marks), Quantitative Abilities (50 marks), General Awareness (with emphasis on Delhi's History, Culture, Demography, Geography, Economy, Administration & Governance) (50 marks), English Language & Comprehension (50 marks).
Part II (Descriptive – 75 marks):
- Essay in English (50 marks), Letter writing/Expansion of ideas in English (25 marks). Focus on official drafting, administrative topics, clarity, brevity, and formal style. May include office procedures, noting & drafting basics, public administration concepts, RTI, citizen charter, and governance themes.
DSSSB ASO Exam Pattern 2026
Tier I
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Type: MCQs
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Total Questions/Marks: 200/200 (1 mark each)
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Duration: 2 hours
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Negative Marking: 0.25 marks per wrong answer
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Sections: 40 marks each for the five core areas (GA, Reasoning, Numerical, Hindi, English)
Tier II
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Type: MCQ (Part I) + Descriptive (Part II)
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Duration: 3 hours (one session)
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Marks: 200 (MCQ) + 75 (Descriptive) = 275 total
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Negative Marking: 0.25 per wrong MCQ
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Qualifying in Tier I is required to advance (candidates ~6–10 times the vacancies called for Tier II).
How to Download DSSSB ASO Syllabus 2026 PDF
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Visit dsssb.delhi.gov.in.
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Navigate to “Recruitments” > “Latest Advertisements/Notices.”
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Locate Advt. No. 01/2026 (dated 20-02-2026) for Combined Examinations.
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Download the notification PDF, which includes the syllabus/indicative scheme and vacancy details.
DSSSB ASO Preparation Strategy 2026
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Planning: Dedicate 3–4 months with daily slots for each section; prioritize weaknesses like data interpretation or grammar.
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Practice: Take weekly full-length mocks (200 questions, 2 hours) and solve previous DSSSB Assistant/DASS Grade-II papers.
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Key Areas: Build speed in Reasoning/Numerical; track current affairs (especially Delhi schemes) in a notebook.
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Descriptive Skills: Practice essays/letters every few days on admin topics; focus on official formats and formal tone.
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Revision: Regularly review basics; use concise notes for quick recall.
Best Books for DSSSB ASO Preparation
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General Awareness: Lucent’s General Knowledge (static GK); monthly current affairs magazines.
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Reasoning: “A Modern Approach to Verbal & Non-Verbal Reasoning” by R.S. Aggarwal.
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Quantitative Aptitude: “Quantitative Aptitude for Competitive Examinations” by R.S. Aggarwal.
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English: “Objective General English” by S.P. Bakshi.
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Hindi: Standard objective Hindi grammar books for state exams.
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Descriptive/Admin: DSSSB Assistant/ASO guides (Arihant or similar); books on essay/letter/precis writing for govt exams.
DSSSB ASO Exam Highlights 2026
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Eligibility: Graduation; age typically 21–30 years (check notification for relaxations).
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Negative Marking: 0.25 per wrong answer in objective parts.
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Qualifying Marks: Category-wise (e.g., ~40% UR, lower for reserved; exact in notification).
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Application Dates: February 24 to March 25, 2026.
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Competition: High for this sought-after Delhi govt admin role.
