DSSSB ASO Syllabus 2026: Tier I & II Exam Pattern, Subject Wise Syllabus PDF

DSSSB ASO Syllabus 2026 – Complete Guide

The Delhi Subordinate Services Selection Board (DSSSB) has released the official syllabus for Assistant Section Officer (ASO) Grade-II (GNCTD) recruitment under Advt. No. 01/2026. This comprehensive guide covers the detailed exam pattern, subject-wise syllabus, and selection process for Tier I and Tier II. Candidates aspiring for Delhi government administrative roles must master General Awareness, Reasoning, Numerical Ability, Hindi & English Comprehension, and Computer Proficiency to excel in this competitive exam.

Organization Overview

The Delhi Subordinate Services Selection Board (DSSSB) is responsible for recruiting candidates for various subordinate services under the Government of NCT of Delhi. The Assistant Section Officer (ASO) post is a Grade-II position in the Delhi Secretariat, offering a challenging career in administration and policy implementation.

Exam Pattern 2026

The DSSSB ASO exam follows a two-tier structure. Tier I is qualifying in nature, while Tier II determines the final merit. Both tiers are conducted in Computer-Based Test (CBT) mode with negative marking of 0.25 marks per wrong answer.

Tier I Exam Pattern (Qualifying)

Tier II Exam Pattern (Merit-Deciding)

Part 1 (Objective MCQ – 200 Marks)

Part 2 (Descriptive – 100 Marks, in English)

Total Duration for Tier II: 3 Hours (one session). Negative marking of 0.25 per wrong MCQ in both tiers.

Subject-wise Syllabus

1. General Awareness (Tier I & Tier II)

• Current Events (National & International, last 6 months)
• Indian History, Geography, Polity & Constitution
• Economics, Sports, Art & Culture
• Scientific Research, Discoveries & Everyday Science
• National & International Organizations
• Famous Places, Books & Authors in India
• Environmental Issues & Delhi-specific GK (governance, schemes)

2. General Intelligence & Reasoning Ability

• Analogies, Similarities & Differences
• Problem Solving, Analysis, Judgment & Decision Making
• Visual Memory, Discrimination, Observation
• Relationship Concepts, Arithmetical Reasoning
• Verbal & Figure Classification, Number Series
• Blood Relations, Syllogism, Coding-Decoding, Direction Sense

3. Arithmetical & Numerical Ability

• Number System, Simplification, Decimals & Fractions
• LCM & HCF, Ratio & Proportion, Percentage, Average
• Profit & Loss, Discount, Simple & Compound Interest
• Time & Work, Time & Distance, Mensuration
• Data Interpretation, Tables & Graphs

4. Hindi Language & Comprehension (Mainly Tier I)

• Grammar, Vocabulary, Sentence Structure
• Synonyms, Antonyms, One Word Substitution
• Idioms & Phrases, Error Detection, Reading Comprehension
• Correct Usage & Spelling

5. English Language & Comprehension (Tier I & Tier II)

• Reading Comprehension, Vocabulary, Grammar
• Sentence Structure & Improvement
• Synonyms, Antonyms, Idioms & Phrases
• Active/Passive Voice, Direct/Indirect Narration
• Error Spotting, Fill in the Blanks

6. Computer Proficiency (Tier II Only)

• Basics of Computers, Hardware & Software
• History & Generations of Computers
• MS Office (Word, Excel, PowerPoint) – Formatting, Formulas, Shortcuts
• Operating Systems (Windows), Internet & Networking Basics
• Email, Cyber Security, Virus & Antivirus
• Input/Output Devices, Memory & Storage

Selection Process

The selection process for DSSSB ASO 2026 consists of the following stages:

1. Tier I (Qualifying): Objective MCQ test of 200 marks. Candidates must secure the minimum qualifying marks to proceed.
2. Tier II (Merit): Comprises Part 1 (Objective MCQ – 200 marks) and Part 2 (Descriptive – 100 marks). Final merit is based on Tier II performance.
3. Document Verification: Shortlisted candidates must produce original documents for verification.
4. Medical Examination: Candidates must pass a medical fitness test as per DSSSB norms.

Preparation Tips

• Start with Tier I to clear the qualifying cut-off.
• Focus more on Tier II Computer section and Descriptive English (Essay, Letter, Precis).
• Read newspapers daily for Current Affairs and practice previous year papers.
• Solve mock tests regularly to manage time and negative marking.
• Emphasize Delhi-specific GK for General Awareness.