Chemistry — Class 9 — Solved Notes & Q&A

Free solved chapter notes for Chemistry — Class 9 · All Pakistan BISE boards · ← all books

Reactions, definitions and solved exercise Q&A for matric Chemistry. These notes are free for every student — read them online, no login needed. Each chapter below has a summary and solved questions & answers. Use the chapter list to jump straight to the chapter you need.

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Chapter 1: Fundamentals of Chemistry

Fundamentals of Chemistry (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. This is a frequently asked board-exam question from Fundamentals of Chemistry.

Q: pH of a neutral solution is:Answer: 7. Key concept from Fundamentals of Chemistry: remember the definition and one worked example.

Q: Chemical formula of water is:Answer: H₂O. This is a frequently asked board-exam question from Fundamentals of Chemistry.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from Fundamentals of Chemistry.

Q: Which gas turns lime water milky?Answer: CO₂. This is a frequently asked board-exam question from Fundamentals of Chemistry.

Q: The lightest element is:Answer: Hydrogen. Link this answer to the chapter formula/definition and revise it daily.

Chapter 2: Structure of Atoms

Structure of Atoms (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. Key concept from Structure of Atoms: remember the definition and one worked example.

Q: pH of a neutral solution is:Answer: 7. Link this answer to the chapter formula/definition and revise it daily.

Q: Chemical formula of water is:Answer: H₂O. Link this answer to the chapter formula/definition and revise it daily.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from Structure of Atoms.

Q: Which gas turns lime water milky?Answer: CO₂. This is a frequently asked board-exam question from Structure of Atoms.

Q: The lightest element is:Answer: Hydrogen. This is a frequently asked board-exam question from Structure of Atoms.

Chapter 3: Periodic Table

Periodic Table (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. Key concept from Periodic Table: remember the definition and one worked example.

Q: pH of a neutral solution is:Answer: 7. Link this answer to the chapter formula/definition and revise it daily.

Q: Chemical formula of water is:Answer: H₂O. Key concept from Periodic Table: remember the definition and one worked example.

Q: A covalent bond involves:Answer: Sharing of electrons. Link this answer to the chapter formula/definition and revise it daily.

Q: Which gas turns lime water milky?Answer: CO₂. Link this answer to the chapter formula/definition and revise it daily.

Q: The lightest element is:Answer: Hydrogen. Link this answer to the chapter formula/definition and revise it daily.

Chapter 4: Chemical Bonding

Chemical Bonding (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. This is a frequently asked board-exam question from Chemical Bonding.

Q: pH of a neutral solution is:Answer: 7. Link this answer to the chapter formula/definition and revise it daily.

Q: Chemical formula of water is:Answer: H₂O. This is a frequently asked board-exam question from Chemical Bonding.

Q: A covalent bond involves:Answer: Sharing of electrons. Key concept from Chemical Bonding: remember the definition and one worked example.

Q: Which gas turns lime water milky?Answer: CO₂. This is a frequently asked board-exam question from Chemical Bonding.

Q: The lightest element is:Answer: Hydrogen. This is a frequently asked board-exam question from Chemical Bonding.

Chapter 5: States of Matter

States of Matter (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. Link this answer to the chapter formula/definition and revise it daily.

Q: pH of a neutral solution is:Answer: 7. Key concept from States of Matter: remember the definition and one worked example.

Q: Chemical formula of water is:Answer: H₂O. This is a frequently asked board-exam question from States of Matter.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from States of Matter.

Q: Which gas turns lime water milky?Answer: CO₂. Key concept from States of Matter: remember the definition and one worked example.

Q: The lightest element is:Answer: Hydrogen. Key concept from States of Matter: remember the definition and one worked example.

Chapter 6: Solutions

Solutions (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. This is a frequently asked board-exam question from Solutions.

Q: pH of a neutral solution is:Answer: 7. This is a frequently asked board-exam question from Solutions.

Q: Chemical formula of water is:Answer: H₂O. Link this answer to the chapter formula/definition and revise it daily.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from Solutions.

Q: Which gas turns lime water milky?Answer: CO₂. Link this answer to the chapter formula/definition and revise it daily.

Q: The lightest element is:Answer: Hydrogen. Link this answer to the chapter formula/definition and revise it daily.

Chapter 7: Electrochemistry

Electrochemistry (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. Key concept from Electrochemistry: remember the definition and one worked example.

Q: pH of a neutral solution is:Answer: 7. This is a frequently asked board-exam question from Electrochemistry.

Q: Chemical formula of water is:Answer: H₂O. Link this answer to the chapter formula/definition and revise it daily.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from Electrochemistry.

Q: Which gas turns lime water milky?Answer: CO₂. Key concept from Electrochemistry: remember the definition and one worked example.

Q: The lightest element is:Answer: Hydrogen. Link this answer to the chapter formula/definition and revise it daily.

Chapter 8: Chemical Reactivity

Chemical Reactivity (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. Link this answer to the chapter formula/definition and revise it daily.

Q: pH of a neutral solution is:Answer: 7. This is a frequently asked board-exam question from Chemical Reactivity.

Q: Chemical formula of water is:Answer: H₂O. Link this answer to the chapter formula/definition and revise it daily.

Q: A covalent bond involves:Answer: Sharing of electrons. Key concept from Chemical Reactivity: remember the definition and one worked example.

Q: Which gas turns lime water milky?Answer: CO₂. Key concept from Chemical Reactivity: remember the definition and one worked example.

Q: The lightest element is:Answer: Hydrogen. Key concept from Chemical Reactivity: remember the definition and one worked example.

Chapter 9: Acids, Bases & Salts

Acids, Bases & Salts (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. This is a frequently asked board-exam question from Acids, Bases & Salts.

Q: pH of a neutral solution is:Answer: 7. Key concept from Acids, Bases & Salts: remember the definition and one worked example.

Q: Chemical formula of water is:Answer: H₂O. Link this answer to the chapter formula/definition and revise it daily.

Q: A covalent bond involves:Answer: Sharing of electrons. Key concept from Acids, Bases & Salts: remember the definition and one worked example.

Q: Which gas turns lime water milky?Answer: CO₂. Link this answer to the chapter formula/definition and revise it daily.

Q: The lightest element is:Answer: Hydrogen. Key concept from Acids, Bases & Salts: remember the definition and one worked example.

Chapter 10: Organic Chemistry

Organic Chemistry (Chemistry) — key ideas solved and simplified for Class 9. Revise the Q&A below, then take the 4 chapter tests. Study with honesty — give each test in front of a parent or elder.

Solved questions & answers

Q: The atomic number of Carbon is:Answer: 6. This is a frequently asked board-exam question from Organic Chemistry.

Q: pH of a neutral solution is:Answer: 7. Link this answer to the chapter formula/definition and revise it daily.

Q: Chemical formula of water is:Answer: H₂O. Key concept from Organic Chemistry: remember the definition and one worked example.

Q: A covalent bond involves:Answer: Sharing of electrons. This is a frequently asked board-exam question from Organic Chemistry.

Q: Which gas turns lime water milky?Answer: CO₂. Link this answer to the chapter formula/definition and revise it daily.

Q: The lightest element is:Answer: Hydrogen. Link this answer to the chapter formula/definition and revise it daily.

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