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Class 12 Chemistry - PYQ 30 Important Questions

Board Exam Revision Pack | Theory + Diagrams + Short + Long

🔹 A. Short Answer Questions
Q1. Define molarity.
Q2. What is electrolysis?
Q3. Define catalyst.
Q4. What is corrosion?
Q5. Define adsorption.
Q6. What is an electrolyte?
Q7. Define polymer.
Q8. What is hybridization?
Q9. Define ligand.
Q10. What is aromaticity?
🔹 B. Long Answer Questions
Q11. Explain the Nernst equation and its applications.
Q12. Describe electrochemical cells.
Q13. Explain chemical kinetics and factors affecting reaction rate.
Q14. Explain coordination compounds and nomenclature.
Q15. Describe d-block elements and their properties.
Q16. Explain haloalkanes and haloarenes.
Q17. Explain alcohols, phenols and ethers.
Q18. Describe aldehydes, ketones and carboxylic acids.
Q19. Explain amines and their reactions.
Q20. Explain polymers and biomolecules.
🔹 C. PYQ Type Questions
Q21. Draw and label Daniel Cell.
Q22. Write the structure of glucose.
Q23. Differentiate between SN1 and SN2 reactions.
Q24. Explain Freundlich adsorption isotherm.
Q25. State and explain Faraday's laws of electrolysis.
🔹 D. Application Based Questions
Q26. Why is galvanization used to prevent rusting?
Q27. How are polymers useful in daily life?
Q28. Why are catalysts important in industries?
Q29. Why are transition metals colored?
Q30. Why is glucose called an energy source?
🔹 E. Important Diagrams

⚡ Daniel Cell

Zn | ZnSO₄ || CuSO₄ | Cu

Anode  →  Cathode
Electrons Flow →
        

🧪 Electrolysis Setup

 (+) Anode
    |
 Electrolyte
    |
 (-) Cathode
        

🍬 Glucose Structure

CHO
 |
H-C-OH
 |
HO-C-H
 |
H-C-OH
 |
CH₂OH