The BSSC CGL (Bihar Staff Selection Commission Combined Graduate Level) exam is conducted for recruitment to various Group B and Group C posts in the state of Bihar, India. Although I cannot provide you with the complete syllabus within the given word limit, I can give you a brief overview of the topics usually covered in the BSSC CGL exam. Here are the major sections of the syllabus:

General Studies:

• Current Affairs: National and international current events, sports, awards, important dates, etc.
• Indian History: Ancient, medieval, and modern history of India, major dynasties, freedom struggle, etc.
• Indian Geography: Physical geography, Indian rivers, mountains, climate, states and capitals, etc.
• Indian Polity: Indian Constitution, political system, governance, public administration, Panchayati Raj, etc.
• Indian Economy: Basic concepts of economics, economic development, planning, budget, banking, etc.
• Science and Technology: Physics, Chemistry, Biology, scientific inventions, technological advancements, etc.
• Environmental Studies: Ecology, biodiversity, pollution, climate change, environmental conservation, etc.

General Science:

• Physics: Laws of motion, gravitation, sound, light, electricity, magnetism, energy, etc.
• Chemistry: Chemical reactions, periodic table, acids and bases, metals and non-metals, polymers, etc.
• Biology: Cell structure, human anatomy, genetics, plant and animal kingdom, diseases, nutrition, etc.
• Scientific Inventions and Discoveries: Important discoveries and inventions in the field of science.

Mathematics:

• Number Systems: Number series, HCF, LCM, fractions, decimals, percentage, ratio, and proportion.
• Simplification: BODMAS rule, approximation, square root, cube root, etc.
• Average: Average weight, height, marks, ages, problems on average, etc.
• Ratio and Proportion: Proportional quantities, variations, direct and inverse proportion.
• Time and Work: Work efficiency, work and wages, pipes and cisterns, etc.
• Time and Distance: Speed, distance, time, relative speed, trains, boats, and streams, etc.
• Profit and Loss: Selling price, cost price, discount, partnership, profit and loss calculations.
• Simple and Compound Interest: Simple interest, compound interest, installment payments, etc.
• Geometry: Basic concepts, lines, angles, triangles, circles, polygons, mensuration, etc.
• Trigonometry: Trigonometric ratios, identities, heights and distances, trigonometric equations.
• Algebra: Polynomials, linear equations, quadratic equations, arithmetic progression, etc.

Reasoning:

• Verbal Reasoning: Blood relations, seating arrangement, analogy, series completion, etc.
• Non-Verbal Reasoning: Pattern completion, figure series, classification, visual reasoning, etc.
• Coding-Decoding: Coding and decoding of words, symbols, letters, etc.
• Direction Sense: Directions, distance, sense of direction, etc.
• Logical Reasoning: Deductive and inductive reasoning, statement and arguments, logical games, etc.

General Hindi:

• Grammar: Sentence formation, subject-verb agreement, tenses, voice, narration, articles, etc.
• Vocabulary: Synonyms, antonyms, one-word substitution, idioms, phrases, words of foreign origin, etc.
• Comprehension: Reading comprehension, understanding passages, answering questions based on them.
• Sentence Formation: Correct sentence formation, sentence improvement, error detection, etc.
• Fill in the Blanks: Filling appropriate words in the given blanks to complete the sentence.

General English:

• Grammar: Parts of speech, verb forms, tenses, active and passive voice, direct and indirect speech.
• Vocabulary: Synonyms, antonyms, analogies, idioms, phrases, word usage, etc.
• Comprehension: Reading passages, understanding and answering questions based on them.
• Sentence Correction: Identifying and correcting grammatical errors in sentences.
• Fill in the Blanks: Completing sentences with appropriate words.

This is a comprehensive overview of The BSSC CGL syllabus. However, it is advisable to refer to the official notification or website of the Bihar Staff Selection Commission for the most up-to-date and detailed syllabus. Additionally, candidates should refer to specific study materials and practice papers to prepare thoroughly for the exam.