The SSC CGL (Staff Selection Commission - Combined Graduate Level) exam syllabus is divided across four tiers, each testing different skill sets. Here's the detailed syllabus:

Tier-I: Preliminary Exam (Objective)

• Mode: Online (Computer-Based Test)
• Duration: 1 hour (60 minutes)
• Total Marks: 200 marks
• Negative Marking: 0.50 marks per wrong answer

Subjects and Topics : 

General Intelligence & Reasoning (25 Questions, 50 Marks)

• Verbal Reasoning : Analogies, Classification, Coding-Decoding, Series, Blood Relations, Directions.
• Non-Verbal Reasoning : Patterns, Mirror and Water Images, Paper Folding, Embedded Figures.
• Logical Reasoning : Syllogisms, Statements & Assumptions, Puzzles, Venn Diagrams.

General Awareness (25 Questions, 50 Marks)

• Current Affairs : National and International Events.
• Static GK : History, Geography, Polity, Economy, Environment.
• General Science: Biology, Physics, Chemistry.
• Economy: Budget, Economic Terms, Inflation, Banking.
• Important Schemes & Policies: Government Schemes.

Quantitative Aptitude (25 Questions, 50 Marks)

• Arithmetic: Profit and Loss, Simple and Compound Interest, Ratio and Proportion, Percentage, Time and Work, Speed, Distance, and Time.
• Algebra: Linear Equations, Polynomials.
• Geometry: Triangles, Circles, Quadrilaterals.
• Trigonometry: Heights and Distances, Basic Trigonometric Identities.
• Data Interpretation: Bar Graphs, Pie Charts, Tables.

English Language & Comprehension (25 Questions, 50 Marks)

• Vocabulary: Synonyms, Antonyms, One-word Substitution.
• Grammar: Active-Passive Voice, Sentence Improvement, Error Spotting.
• Reading Comprehension: Passages and Cloze Tests.

Tier-II: Mains Exam (Objective)

• Mode: Online (Computer-Based Test)
• Duration: 2 hours for each paper
• Negative Marking: 1 mark per wrong answer in Paper-I, Paper-II, and Paper-III.

Papers and Topics

Paper-I: Quantitative Aptitude (200 Marks)

• Advanced mathematics topics like Algebra, Geometry, Trigonometry, Mensuration, and Statistics.
• Data Interpretation and Analysis.

Paper-II: English Language & Comprehension (200 Marks)

• Grammar: Tenses, Articles, Prepositions.
• Vocabulary: Idioms, Phrases, Synonyms, Antonyms.
• Comprehension and Error Detection.

Paper-III: Statistics (200 Marks) (For Statistical Investigator posts only)

• Measures of Central Tendency (Mean, Median, Mode).
• Probability Theory and Distribution.
• Correlation and Regression.
• Sampling Theory.

Paper-IV: General Studies (Finance and Economics) (200 Marks) (For AAO posts only)

• Finance: Basic Accounting Principles, Financial Statements.
• Economics: Micro and Macro Economics, Economic Policies, Indian Economy Overview.

Tier-III: Descriptive Test

• Mode: Offline (Pen-and-Paper Test)
• Duration: 1 hour
• Total Marks: 100 marks
• Nature: Qualifying

Topics

• Essay Writing: Topics related to current affairs, social or economic issues.
• Precis Writing: Summarization of passages.
• Letter/Application Writing: Official and formal communication formats.

Tier-IV: Skill Test/Computer Proficiency Test

• Mode: Practical Skill Test
• Nature: Qualifying

Tests Conducted

Data Entry Speed Test (DEST)

• For posts like Tax Assistant.
• Requires a typing speed of 8,000 key depressions per hour.

Computer Proficiency Test (CPT)

• For posts like Assistant Section Officer.
• Tests skills in Word Processing, Spreadsheets, and PowerPoint.

Document Verification (DV)

• Verification of eligibility and educational qualifications.

Key Notes

• Tier-I and Tier-II are screening tests, and their scores determine shortlisting for further rounds.
• Tier-III is qualifying in nature but crucial for the merit list.
• Tier-IV is conducted only for posts requiring specific skills.