Chemistry I - For Class XI (Science Group/Pre-Engineering & Pre-Medical) - Chapter-wise Important Topics 2026 - By Professor Nasim Zulfiqar

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Class XI (Science)
Chemistry I

By Professor Nasim Zulfiqar
WhatsApp# 0300-2152272

• Chapter-wise Important Topics 2026
• Solved MCQs -Chapter-wise 2023

Chapter-wise Important Topics 2026

Chapter# 01: Stoichiometry

1. Numerical of Limiting Reactant (Short)
2. Numerical of Mass Volume Relationship (Short)
3. Numerical of Percentage Yield (Short)
4. Definitions: Stoichiometry, Mole, Avogadro's number, Significant figures, percentage yield, Limiting reactant, molar volume (short)

Chapter# 02: Atomic Structure

1. Bohr's Derivation for radius, energy, frequency and wave number of hydrogen atom (long)
2. Rules of Electronic Configuration (Aufbau Principle, n+l rule, Pauli's exclusion principle, Hund's rule) with electronic configuration (Short)
3. Write a short note on Quantum Numbers (Short)
4. Differentiate: Line Spectrum and Continuous Spectrum (short)

Chapter# 03: Theories of Covalent Bond and Shapes of Molecules

1. Define Hybridization. Explain sp3, sp2 and sp hybridization with example. (long)
2. Draw the shapes of following molecules according to VSEPR theory. (long) BeCl₂, BF₃, CH₄, NH₃, H₂O
3. Draw the molecules orbital diagram of N₂ and O₂. Mention the bond order, (short) magnetic behavior and molecular orbital electronic configuration.
4. Differentiate between: Sigma bond and Pi bond (short)

Chapter# 04: States of Matter I - Gas

1. Derive PV=nRT and mention the value of R in 3 different units. (short)
2. Derive van der Waal equation with volume correction and pressure correction. (long)
3. Numerical of PV=nRT (d=PM/RT)
4. Numerical of Graham's Law of diffusion
5. Numerical of Dalton's law of Partial Pressure

Chapter# 05: States of Matter II - Liquid

1. Write a short note on Surface Tension / Viscosity (short)

Chapter# 06: States of Matter III - Solid

1. Differentiate: Crystalline Solid & Amorphous Solid, Isomorphism & Polymorphism
2. Explain the four types of crystals. (short)
3. Define unit cell. Determine the number of sodium ions and chloride ions in each unit cell of NaCl. (short)

Chapter# 07: Chemical Equilibrium

1. State Law of Mass Action and derive an expression for equilibrium constant (Kc) (long)
2. State Le-chatelier's principle along with its industrial application (Haber's process) (long)
3. Numerical of Kc.
4. Numerical of solubility product.
5. Numerical of Precipitation.

Chapter# 08: Acid, Bases and Salt

1. Explain Bronsted-Lowry Concept of acid and base with example. (short)

Chapter# 09: Chemical Kinetics

1. Explain the factors affecting rate of reaction. (long)
2. Differentiate between homogenous catalysis and heterogenous catalysis, rate of reaction and rate constant. (short)
3. Numerical of Rate of Reaction/Rate Constant (short)
4. Numerical of Order of Reaction. (short)

Chapter# 10: Solutions and Colloids

1. State Raoult's law with derivation (long)
2. Explain colligative properties (long)
3. Numerical of ppm/ppb/ppt (short)

Chapter# 11: Thermochemistry

1. State first law of thermodynamics along-with its mathematical derivation. (short)
2. Derive pressure volume work equation along-with its special cases. (long)
3. Numerical of heat of formation (short)
4. Differentiate between intensive properties and extensive properties (short)

Chapter# 12: Electrochemistry

1. Differentiate between oxidation and reduction (short)
2. Find out the oxidation number of given compound. (short)
3. Determination of standard reduction -potential of Zinc and Copper with diagram. (long)
4. Balancing Redox Reaction by Ion-electron method in acidic and basic medium (long)
5. Explain the construction and working of dry cell / lead storage battery with diagram. (long)

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