General Science Class 8 English Medium textbook is published by Punjab Curriculum and Textbook Board (PCTB), Lahore. This is the official English medium science textbook for Class 8 students studying in PCTB-affiliated schools across Punjab. The book covers 12 chapters including biology, chemistry, and physics topics — based on the Punjab Board prescribed syllabus.
Class 8 English medium students preparing for Punjab Board annual exams can download this General Science textbook in PDF format for free. The book covers all essential topics in clear, structured English — making it ideal for revision, concept building, and board exam preparation.
Book Overview
- Class: 8
- Subject: General Science
- Medium: English
- Board: Punjab Curriculum and Textbook Board (PCTB), Lahore
- Publisher: Punjab Curriculum and Textbook Board, Lahore
- Authors: Prof. Muhammad Tahir, Atta Dastgeer, Qaiser Saleem, Zafar Mehdi Zafar, Faiz Hussain, Abdul Rauf Zahid, Muhammad Anwar Sajid, Dr. Saman Jamil
- Language: English
- Total Chapters: 12
- Format: PDF
Chapter List
Chapter 1: Human Organ Systems
Students study the organ systems of the human body and understand how each one performs a specific function. The chapter explains the digestive system’s role in breaking down food, the respiratory system’s role in gas exchange, the circulatory system’s role in transporting blood, and the excretory system’s role in removing waste from the body.
Chapter 2: Cell Division
This chapter introduces the two main types of cell division — mitosis and meiosis — and explains when and why each occurs. Students learn how mitosis produces identical cells for growth and repair, while meiosis produces sex cells for reproduction, and how errors in cell division can lead to health problems.
Chapter 3: Biotechnology
Students discover how biotechnology bridges science and everyday life through techniques like fermentation, genetic engineering, and cloning. The chapter explores how biotech is used to produce insulin for diabetic patients, develop disease-resistant crops, and improve food shelf life — showing the direct impact of biology on human health and agriculture.
Chapter 4: Pollutants and Their Effects on Environment
Students learn to identify major pollutants released into air, water, and soil, and understand how they harm both ecosystems and human health. The chapter discusses industrial waste, vehicle emissions, plastic pollution, and deforestation — and explains the steps individuals, communities, and governments can take to protect the environment.
Chapter 5: Chemical Reactions
This chapter helps students understand what happens during a chemical reaction — how bonds break and form, how to identify reactants and products, and how to balance equations. Topics include exothermic and endothermic reactions, factors that speed up or slow down reactions, and examples from cooking, rusting, and burning.
Chapter 6: Acids, Alkalis/Bases and Salts
Students explore how to identify and classify acids, bases, and salts using indicators and the pH scale. The chapter covers strong and weak acids, the process of neutralization, how salts are formed, and the role of these substances in everyday applications — from food preservation and cleaning products to medicines and agriculture.
Chapter 7: Force and Pressure
Students investigate how forces act on objects and how pressure varies depending on force and area. The chapter covers balanced and unbalanced forces, Newton’s laws, how pressure behaves differently in liquids and gases, and how engineers use pressure principles in designing brakes, syringes, and hydraulic lifts.
Chapter 8: Measurement of Physical Quantities
This chapter focuses on developing scientific measurement skills. Students learn to use rulers, balances, measuring cylinders, thermometers, and stopwatches correctly. The chapter explains SI units, significant figures, the difference between scalar and vector quantities, and why precision and accuracy matter in scientific experiments.
Chapter 9: Sources and Effects of Heat
Students examine natural and artificial sources of heat and study how heat energy moves from one place to another. The chapter explains conduction in solids, convection in fluids, and radiation in vacuum — with practical examples like cooking, heating systems, and greenhouse effects that connect the theory to real life.
Chapter 10: Lenses
This chapter explains how converging and diverging lenses work and how they form real or virtual images. Students use ray diagrams to understand image formation and learn how lenses are applied in correcting vision defects like short-sightedness and long-sightedness, as well as in optical instruments like microscopes and binoculars.
Chapter 11: Electricity
Students explore the flow of electric current through conductors and learn how to draw and interpret circuit diagrams. The chapter covers voltage, current, resistance, Ohm’s law, series vs. parallel circuits, electric power, and energy consumption — as well as important safety practices to follow when working with electrical appliances at home.
Chapter 12: Space Research
The book concludes with a journey through the cosmos — from the structure of the solar system to distant galaxies. Students learn about the life cycle of stars, artificial satellites, space probes, and historic space missions. The chapter also highlights Pakistan’s involvement in space science through SUPARCO and inspires students to consider careers in astronomy and aerospace.
Download General Science Class 8 English Medium PDF
Click the button below to download the General Science Class 8 English Medium PCTB textbook PDF free of cost.
Who Should Read This Book
This textbook is for Class 8 English medium students studying in PCTB-affiliated schools across Punjab. It is the officially prescribed General Science English medium textbook for Punjab Board Class 8 and is useful for students, parents, and teachers who need the standard curriculum material in English language PDF. Students preparing for Punjab Board Class 8 annual exams will find all 12 chapters essential for complete exam coverage.
Applicable Boards
This is the official PCTB General Science English Medium textbook for Class 8 and applies to all Punjab Board-affiliated English medium schools. Schools in Lahore, Faisalabad, Multan, Gujranwala, Rawalpindi, Bahawalpur, Sahiwal, Sargodha, and DG Khan districts use this textbook. English medium students across all Punjab Board districts will find this book fully aligned with their General Science course.
FAQs
Is this the official PCTB General Science English Medium textbook for Class 8?
Yes, this is the official General Science English Medium textbook for Class 8 published by Punjab Curriculum and Textbook Board (PCTB), Lahore. It is prescribed for all PCTB-affiliated English medium schools across Punjab.
What chapters are covered in this book?
This book contains 12 chapters: Human Organ Systems, Cell Division, Biotechnology, Pollutants and Their Effects on Environment, Chemical Reactions, Acids/Alkalis/Bases and Salts, Force and Pressure, Measurement of Physical Quantities, Sources and Effects of Heat, Lenses, Electricity, and Space Research.
Is this book available in Urdu medium too?
Yes, a separate Urdu medium version of General Science Class 8 is also available on Freebooks.pk with the same chapters in Urdu language.
Is this book free to download?
Yes, this is a government-issued PCTB textbook available free of cost to all students. You can download the PDF from the button above at no charge.