10 short questions from each of the 14 chapters of Class 11 Chemistry (2025 syllabus)

 Here are 10 short questions from each of the 14 chapters of Class 11 Chemistry (2025 syllabus)

Chapter 1: Physical Chemistry – Some Basic Concepts

  1. Define mole.

  2. What is molar mass?

  3. Explain Avogadro’s number.

  4. What is empirical formula?

  5. Difference between empirical and molecular formula.

  6. Define percent composition.

  7. What is molality?

  8. What is molarity?

  9. Define mass percent.

  10. How to calculate molecular formula from composition?

Chapter 2: Structure of Atom

  1. State Rutherford’s model.

  2. Define atomic number.

  3. What is mass number?

  4. Define isotopes.

  5. Define isobars.

  6. What is an energy level?

  7. What are orbitals?

  8. Define electronic configuration.

  9. Why is Bohr model limited?

  10. Define ionization energy.

Chapter 3: Classification of Elements & Periodicity

  1. What is periodic table?

  2. Define periodicity.

  3. What is atomic radius?

  4. Define electronegativity.

  5. Trend of ionization energy in a group.

  6. Trend of metallic character across period.

  7. What is electron affinity?

  8. Define cation and anion radii trend.

  9. What determines chemical reactivity?

  10. Why do elements show periodic behavior?

Chapter 4: Chemical Bonding & Molecular Structure

  1. Define ionic bond.

  2. Define covalent bond.

  3. What is bond polarity?

  4. Explain electronegativity difference.

  5. Define bond order.

  6. What is VSEPR theory?

  7. Shape of methane (CH₄)?

  8. Define hybridization.

  9. What is dipole moment?

  10. Define resonance.

Chapter 5: States of Matter: Gases & Liquids

  1. State ideal gas equation.

  2. Define real gas.

  3. What is van der Waals equation?

  4. Define critical temperature.

  5. What is surface tension?

  6. Define viscosity.

  7. Explain capillarity.

  8. What is vapour pressure?

  9. Define boiling point.

  10. What is molar volume of gas at STP?

Chapter 6: Thermodynamics

  1. Define system and surroundings.

  2. What is internal energy?

  3. State first law of thermodynamics.

  4. What is enthalpy?

  5. Define exothermic process.

  6. Define endothermic process.

  7. What is entropy?

  8. State second law of thermodynamics.

  9. Define Gibbs free energy.

  10. Condition for spontaneity.

Chapter 7: Equilibrium

  1. Define chemical equilibrium.

  2. What is dynamic equilibrium?

  3. State Le Chatelier's principle.

  4. Define equilibrium constant (Kc).

  5. Difference between Kc and Kp.

  6. What is homogeneous equilibrium?

  7. Define heterogeneous equilibrium.

  8. How does temperature affect equilibrium?

  9. Effect of pressure on equilibrium?

  10. What happens when concentration changes?

Chapter 8: Redox Reactions & Electrochemistry

  1. Define oxidation.

  2. Define reduction.

  3. What is redox reaction?

  4. Define oxidizing agent.

  5. Define reducing agent.

  6. What is electrode potential?

  7. Define electrochemical cell.

  8. What is standard hydrogen electrode?

  9. Define cell voltage.

  10. What is Faraday’s law?

Chapter 9: Hydrogen and Its Compounds

  1. Properties of hydrogen.

  2. Define isotopes of hydrogen.

  3. What is hydrogen bonding?

  4. Why water has high boiling point?

  5. Define hydride.

  6. What are hydrogen fuel cells?

  7. Why hydrogen acts as a reducing agent?

  8. Explain preparation of hydrogen in lab.

  9. Define H₂S acid.

  10. What is water gas?

Chapter 10: s‑Block Elements (Alkali & Alkaline Earth Metals)

  1. Properties of Group 1 elements.

  2. Properties of Group 2 elements.

  3. What is atomic size trend in s-block?

  4. Define hydration energy.

  5. Why alkaline earth metals are harder?

  6. What is thermal stability of carbonates?

  7. Explain flame test of Na and K.

  8. What is solubility of hydroxides?

  9. Define reactivity series in s-block.

  10. Why are s-block metals strong reducing agents?

Chapter 11: p‑Block Elements (Groups 13–18)

  1. Define group and period in p-block.

  2. Properties of boron family.

  3. Properties of oxygen family.

  4. Trend in electronegativity across p-block.

  5. What is allotropy?

  6. Explain inert pair effect.

  7. What is Lewis acid/base?

  8. Define amphoteric oxide.

  9. Reactivity of halogens.

  10. What is oxidation state of nitrogen in NO₂?

Chapter 12: Organic Chemistry – Basic Principles

  1. What is organic chemistry?

  2. Define hydrocarbons.

  3. Properties of alkanes.

  4. Define isomerism.

  5. What is functional group?

  6. Define structural isomer.

  7. What is IUPAC name of CH₃–CH₂–OH?

  8. Define homologous series.

  9. What are alkenes?

  10. Define aromatic compounds.

Chapter 13: Hydrocarbons – Alkenes, Alkynes & Aromatics

  1. Define alkene.

  2. Define alkyne.

  3. What is aromatic hydrocarbon?

  4. State Markovnikov’s rule.

  5. What is addition reaction?

  6. Define polymerization.

  7. What is electrophilic substitution?

  8. Define dehydrogenation.

  9. What is stability of benzene?

  10. Define resonance in benzene.

Chapter 14: Environmental Chemistry & Biomolecules (if included)

  1. Define environmental chemistry.

  2. What are pollutants?

  3. Define pH and acidity.

  4. What is water treatment?

  5. What is biochemical oxygen demand (BOD)?

  6. Define biomolecule.

  7. What are carbohydrates?

  8. Define proteins.

  9. What are lipids?

  10. What is enzyme?


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