10th Class Chemistry Chapter 15 Notes 2026

Chapter 15: Stoichiometry (New Syllabus)

The Class 10 Chemistry Chapter 15 Notes — Stoichiometry have been freshly uploaded and are now available for free download in PDF format. These notes are prepared strictly according to the new syllabus (2026–27) and are ready to help you revise the chapter quickly before your exams.

Latest Update

As per the latest update in August 2026, these notes have been revised to match the current Punjab Curriculum and Textbook Board (PCTB) syllabus for Chemistry, Class 10. Every heading, definition, formula, and numerical in this chapter has been rechecked against the newest textbook edition so that students preparing for their board exams get 100% accurate and up-to-date material — no outdated content, no missing topics.

We Know You Are Looking for These Notes

If you’re reading this, chances are you’ve already searched “Class 10 Chemistry Chapter 15 notes” more than once today. You’re not alone — thousands of students across Punjab search for this exact chapter every exam season, because Stoichiometry is widely considered one of the most numerical-heavy and calculation-focused chapters in the entire Chemistry book. Concepts like the mole concept, molar mass, and balancing chemical equations for calculations can feel confusing without clear, worked examples. The good news is, you’re just one click away. These notes have been written in simple, exam-friendly language, broken down heading by heading, with step-by-step numerical solutions, so that even a student who struggles with chemistry calculations can follow along with confidence.

Why This Subject Matters

Stoichiometry is essentially the mathematics of chemistry — it’s what allows chemists, pharmacists, and engineers to calculate exactly how much of each substance is needed or produced in a chemical reaction. Chapter 15 introduces students to the mole concept, Avogadro’s number, molar mass, and the techniques used to convert between mass, moles, and number of particles. These calculations aren’t just for passing exams; they’re used in real industries every day, from manufacturing medicines in the correct dosages to producing fertilizers and industrial chemicals in the right proportions. Mastering this chapter also builds a strong numerical foundation that will help students in later chapters like Electrochemistry and Reaction Kinetics.

All Chapters – Class 10 Chemistry Notes (New Syllabus)

Below is the complete chapter-wise list for Matric Part 2 Chemistry. You can find Stoichiometry at Chapter 15 (Chapter 2 of the Class 10 portion), along with links to every other chapter in both English and Urdu medium.

Chapter 15 Breakdown: Stoichiometry

This chapter has been split into four easy-to-revise sections so you can study exactly what you need, right before a test or a board paper.

MCQs (New Syllabus)

Objective-type questions covering key terms like mole, molar mass, Avogadro’s number, limiting reagent, and percentage yield — perfect for quick daily revision and for practicing the objective portion of your paper.

Short Questions (New Syllabus)

Two-to-three-line answers on core concepts such as the definition of the mole concept, the relationship between mass and moles, and the significance of Avogadro’s number — exactly the kind of questions that appear most frequently in board exams.

Long Questions (New Syllabus)

Detailed, exam-length answers explaining topics in depth, such as a complete explanation of the mole concept with derivations, the step-by-step method for solving stoichiometric calculations, and worked examples on finding the limiting reagent in a reaction.

Exercise Questions (New Syllabus)

Solved answers to every numerical and theoretical question given at the end of the chapter in your textbook, so you never have to guess whether your working is correct.

Available for All Punjab Boards

These notes are prepared according to the Punjab Curriculum and Textbook Board syllabus, which means they are equally valid and useful for students appearing under any of the following boards:

• BISE Lahore
• BISE Gujranwala
• BISE Faisalabad
• BISE Multan
• BISE Sargodha
• BISE Rawalpindi
• BISE Sahiwal
• BISE Bahawalpur
• BISE DG Khan

Students appearing under the Federal Board (FBISE) Islamabad can also use these notes, as the new syllabus content is largely aligned across boards following the Single National Curriculum.

Benefits of Downloading These Notes

• Covers every heading of Chapter 15 in simple, exam-friendly language
• Prepared and reviewed by experienced chemistry teachers
• Includes solved MCQs, Short Questions, Long Questions, and numerical Exercise Questions in one place
• Explains mole concept calculations using clear, step-by-step worked examples
• Saves you the time of making notes from scratch before exams
• Available completely free of cost, with no hidden registration required
• Formatted for quick last-night-before-the-paper revision
• Available in both English medium and Urdu medium PDF versions
• Helps you score better marks by focusing on exactly what examiners ask

Preparing from organized, chapter-wise notes instead of jumping around a thick textbook is one of the simplest ways to save time and reduce exam stress. Whether you’re revising a day before your test or trying to finally master mole concept calculations this week, these notes are structured so you always know exactly where you are in the chapter.

How to Download

1. Scroll to the chapter table above and locate Chapter 15 – Stoichiometry.
2. Choose your preferred medium — English or Urdu.
3. Click the View/Download button to open the PDF.
4. Save it to your device or print it out for offline study.

No sign-up, no payment, and no waiting — the notes open directly in your browser and can be downloaded in a single tap.

Related Subjects – Class 10 Notes

While you’re preparing your chemistry chapter, you might also need notes for your other subjects. Related Class 10 notes available on this platform include:

• Mathematics
• Physics
• Biology
• Computer Science
• English
• Urdu
• Pakistan Studies
• Islamiat
• General Math

All of these are organized the same way — chapter-wise, board-aligned, and free to download.

Join Our Learning Community

Stay updated with new chapter uploads, past papers, and guess papers by following along on our social platforms. Join our WhatsApp study group for instant notifications whenever new chapters are added, follow our Facebook page for daily exam tips, and subscribe to our YouTube channel for full video lectures that walk through each heading of this chapter — including live worked numericals on mole calculations — step by step.

Frequently Asked Questions (FAQs)

Q1: Are these Class 10 Chemistry Chapter 15 notes free to download?

Yes, all notes on this page — including MCQs, Short Questions, Long Questions, and Exercise Questions — are completely free with no hidden charges.

Q2: Which boards are these notes suitable for?

These notes follow the Punjab Curriculum and Textbook Board syllabus and are valid for all Punjab boards, including Lahore, Gujranwala, Multan, Faisalabad, and others, as well as FBISE Islamabad.

Q3: Do these notes cover the new syllabus (2026–27)?

Yes, these notes are fully updated according to the current Punjab Curriculum and Textbook Board syllabus for Class 10 Chemistry.

Q4: Is a calculator allowed for the numerical questions in this chapter?

Board exam policy varies, but most boards allow simple, non-programmable calculators for numerical chemistry questions. It’s best to confirm the exact policy with your school before your exam.

Q5: Are Urdu medium notes also available for this chapter?

Yes, both English medium and Urdu medium PDFs are available for Chapter 15 – Stoichiometry.

Q6: How do I download the PDF notes?

Simply click the View/Download link next to Chapter 15 in the chapter table above, and the PDF will open for viewing or saving to your device.

Have a question about this chapter or found these notes helpful? Share your comments and questions below — we’re always updating our content based on student feedback.