The general science section of the BPSC (Bihar Public Service Commission) exam syllabus covers a wide range of topics related to various branches of science. It aims to assess the candidate's understanding of basic scientific concepts and their application in real-life situations. The topics covered in this section include:

1. Physics:
- Mechanics: Laws of motion, work, energy, power, and motion of objects.
- Optics: Reflection, refraction, lenses, and mirrors.
- Thermodynamics: Heat, temperature, laws of thermodynamics.
- Electricity and Magnetism: Basic concepts, electric circuits, electromagnetic induction, and devices.

2. Chemistry:
- Atomic Structure: Fundamental particles, electronic configuration, and periodic table.
- Chemical Bonding: Types of bonds, molecular structure.
- States of Matter: Gases, liquids, solids, and their properties.
- Acids, Bases, and Salts: Definitions, properties, and reactions.
- Organic Chemistry: Basics of organic compounds, functional groups, and nomenclature.

3. Biology:
- Cell Biology: Structure and functions of cells, cell division, and genetics.
- Plant Biology: Anatomy, physiology, reproduction, and classification of plants.
- Human Biology: Anatomy and physiology of different systems, diseases, and health issues.
- Ecology: Ecosystems, food chains, and environmental issues.
- Evolution and Genetics: Principles of evolution, inheritance, and genetic variations.

4. Environmental Science:
- Environmental Pollution: Air, water, soil pollution, and their impacts.
- Conservation of Natural Resources: Sustainable development, biodiversity, and ecosystem conservation.
- Climate Change: Causes, effects, and mitigation strategies.

5. Scientific Methodology and Techniques:
- Scientific Inquiry: Hypothesis, experimentation, observation, and data analysis.
- Laboratory Techniques: Basic laboratory equipment, safety precautions, and procedures.
- Scientific Instruments: Commonly used scientific instruments and their functions.

It is important for candidates to have a good understanding of these topics to perform well in the general science section of the BPSC exam. Studying from textbooks, reference books, and practicing previous years' question papers can be helpful in preparing for this section.