2nd Year Chemistry Guess Paper 2025 | Punjab Board in PDF

Student of FSc Part-II, 12th Class, or HSSC-II, feels chemistry difficult to prepare. You know why, because they don’t have proper guide for short and quick revision. We have made it easy for you. This 2nd Year Chemistry Guess Paper 2025 is made especially for students who want to understand important topics in less time. Download 2nd Year Chemistry Guess Paper 2025 and clear your concepts, formulas, and reactions. This model paper includes only the most expected questions that are likely to appear in the 2025/26 board exam. It helps you prepare smartly and saves you from stress.

2nd Year Chemistry Guess Paper 2025 Punjab Board

Book Name	Chemistry
Class	12th | Second Year
Medium	English
Syllabus	New 2025
Chapters	Model Paper / Guess Paper
Book Format	PDF
Total Pages	9

This guess paper follows the latest Punjab Board paper pattern and is helpful for students of all boards like Lahore, Multan, Sahiwal, Faisalabad, DG Khan, Bahawalpur, Rawalpindi, Gujranwala, and Sargodha. A high achiever or a slow learner can get help from this paper.

You can also find the Chemistry pairing scheme 2025 with this guess paper. It shows how marks are divided and what types of questions you should expect. This will give you a clear idea of the paper structure and help you attempt the exam with confidence.

See Also;

1. 2nd year Physics Guess Paper
2. 2nd Year Biology Guess Paper

12th Class Chemistry – Chapter Wise Important Questions

Chapter 1 – Periodicity and Hydrogen

Short Questions

1. What is hydration energy? Share two examples.
2. Why is ionization energy higher across a period?
3. Why is hydrogen placed in Group VII-A in the periodic table?
4. Why is diamond non-conductive while graphite conducts electricity?
5. Define electron affinity. How does it vary in the periodic table?
6. Explain why noble gases usually have zero oxidation states.
7. Why do alkali metals form ionic hydrides?
8. Give two uses of nitric acid.
9. Explain how hydrogen resembles Group IV-A elements.
10. Why is the size of an anion larger than its neutral atom?
11. Name and briefly define the types of hydrides.
12. Why does metallic character increase down a group?
13. Why does lithium behave differently from other alkali metals?
14. What causes Al³⁺ to have higher hydration energy than Mg²⁺?
15. Define periodic table. Why was Mendeleev’s version improved?

Long Questions

1. What are hydrides? Explain their types and major properties.
2. Explain how metallic character changes across a group and period.
3. Describe the periodic table and highlight Mendeleev’s contributions and limitations.

Chapter 2 – The S-Block Elements

Important Short Questions

1. What is borax and what is its formula?
2. Give formula of Chile saltpetre and halite.
3. Write two common features of lithium and magnesium.
4. What is the chemical formula of beryl and barite?
5. Why is Down’s Cell preferred for sodium extraction?
6. Write two problems related to diaphragm cell.
7. Define dolomite and asbestos with their formulas.
8. What happens when sodium bicarbonate is heated?
9. Differentiate between ethanol and propanol.
10. What happens when lithium carbonate is heated?

Long Questions

1. Explain the commercial method of NaOH production using diaphragm or Nelson’s cell.
2. Discuss the preparation of sodium metal through Down’s Cell.
3. Complete and balance the following equations:
   • Li₂O + H₂O
   • Na₂O + H₂O
   • Mg + (OH)₂
   • NaNO₃

Chapter 3 – Group III-A and IV-A Elements

Short Questions

1. Give the reaction of borax with cold and hot water.
2. Explain why borate glazes are better than silicate glazes.
3. What is borax bead test used for?
4. List four uses of borax.
5. Explain how sodium silicate is used in daily life.
6. What is carbonization?
7. Why is borax solution alkaline?
8. Define the structure of carbon dioxide.
9. Write the formula and name of any two oxyacids of nitrogen.
10. What is P₂O₅? How does it react with water?
11. Give any four uses of aluminium.
12. Give any two similarities between carbon and silicon.
13. How is borax formed from colemanite?

Long Questions

1. How is water glass prepared? Write its uses.
2. Describe the method to convert boric acid to borax and vice versa.
3. Write a detailed note on aluminum silicates.

Chapter 6 – The d-Block Elements

1. Prepare all short questions from the exercise section of Chapter 6.
2. Define binding energy and paramagnetism with examples.
3. Why are transition metals colored and paramagnetic? Explain these properties.

Chapter 7 – Fundamentals of Organic Chemistry

Short Questions

1. What is meant by organic chemistry?
2. Define tautomerism with an example.
3. What is the difference between alicyclic and aromatic compounds?
4. What is octane number? How can it be improved?
5. Write the structure of any two isomers of C₄H₁₀.
6. What is a functional group? Name some oxygen-containing groups.
7. What is petroleum? Briefly explain its origin.
8. What is coal tar and what are its common fractions?
9. Define isomerism and its types.
10. What is meant by catenation?
11. Define catalytic and thermal cracking.
12. What is the role of ethene in the industry?
13. What are homocyclic and heterocyclic compounds? Give examples.
14. What is cis-trans isomerism?
15. Define iodized salt.
16. Name any four major sources of organic compounds.
17. Define cracking and explain steam cracking.
18. Describe how a hydrocarbon chain shows chain isomerism.

Long Questions

1. Explain orbital hybridization with examples of sp³, sp², and sp.
2. Describe cracking of petroleum with the help of reactions.
3. Explain different types of isomerism with examples.
4. What are the major sources of organic compounds?