important long questions of chemistry 1st year chapter wise 2025 (Chapter Wise)

important long questions of chemistry 1st year chapter wise 2025 (Chapter War)

important long questions of chemistry 1st year chapter wise 2025 (Chapter War),Chemistry is a scientific article that is very important for first -year students. This article not only provides the foundation for medical and engineering candidates, but also to move forward in scientific subjects. Board exams include both short questions and long questions to examine the preparation of students. Long questions have more numbers and they all include students’ understanding, memory and writing skills. That is why most students who prepare for board exams in 2025 want to know which important long questions of chemistry 1st year chapter wise 2025 Chapter War

In this article we will provide important long questions so that students can easily prepare the exam. At the same time we will include preparation methods and answers to general questions.

Why should you pay attention to important long questions of chemistry 1st year chapter wise 2025?

Most students are unable to prepare the entire course in a similar way because time is limited. By paying attention to the important long questions of chemistry 1st year chapter wise 2025 Chapter War Bob Wars:

• Time and energy are saved.
• Repeated questions are well remembered.
• Mental stress decreases.
• The chances of getting the number increase.

Chapter War important long questions of chemistry 1st year chapter wise 2025 questions

Below are the important long questions of chemistry 1st year chapter wise 2025 Chapter War. This list is prepared in keeping with the guidance of previous papers and teachers.

Chapter 1: Basic Concepts

1. Derive the relationship between mole and molecular mass.
2. Differentiate between empirical formula and molecular formula with examples.
3. Derive molarity and normality formulas with numerical problems.
4. Explain the laws of chemical combination with examples.
5. Differentiate between atom, molecule, and ion with examples.

Chapter 2: Experimental Techniques in Chemistry

1. Describe methods of filtration, crystallization, and sublimation.
2. Explain the working of a separating funnel with diagram.
3. Explain fractional distillation and its importance.
4. Define chromatography and explain its types.

Chapter 3: Gases

1. Derive Boyle’s law, Charles’s law, and Avogadro’s law.
2. Explain kinetic molecular theory of gases.
3. Derive the ideal gas equation PV = nRT.
4. Explain diffusion and effusion of gases.
5. Derive Dalton’s law of partial pressure with applications.

Chapter 4: Liquids and Solids

1. Differentiate between crystalline and amorphous solids.
2. Explain types of crystalline solids with examples.
3. Describe intermolecular forces in liquids.
4. Explain surface tension and viscosity.
5. Discuss the properties of liquids based on hydrogen bonding.

Chapter 5: Atomic Structure

1. Explain Rutherford’s atomic model and its limitations.
2. Discuss Bohr’s theory of hydrogen atom.
3. Derive expression for the energy of electron in hydrogen atom.
4. Explain quantum numbers and their significance.
5. Describe the shapes of s, p, and d orbitals.

Chapter 6: Chemical Bonding

1. Explain ionic bonding with examples.
2. Explain covalent bonding with Lewis structures.
3. Explain hybridization with suitable examples.
4. Explain VSEPR theory and molecular geometries.
5. Discuss hydrogen bonding and its importance.

Chapter 7: Thermochemistry

1. Define enthalpy of reaction and enthalpy of formation.
2. Prove Hess’s law with an example.
3. Explain bond energy and calculation of heat of reaction.
4. Describe different types of enthalpy changes.
5. Differentiate between endothermic and exothermic reactions.

Chapter 8: Chemical Equilibrium

1. Derive the law of mass action.
2. Explain equilibrium constant and its significance.
3. Derive relationship between Kc and Kp.
4. Explain Le Chatelier’s principle with examples.
5. Write notes on industrial applications of equilibrium (e.g., Haber’s process).

Chapter 9: Solutions

1. Define solubility and discuss factors affecting it.
2. Explain colligative properties with examples.
3. Define molarity, molality, and mole fraction with numerical problems.
4. Explain Henry’s law and Raoult’s law.
5. Differentiate between ideal and non-ideal solutions.

Chapter 10: Electrochemistry

1. Explain electrolytic conduction and factors affecting it.
2. Describe the working of galvanic cell.
3. Explain electrolysis of molten NaCl.
4. Write notes on Faraday’s laws of electrolysis.
5. Differentiate between electrolytic cell and electrochemical cell.

Chapter 11: Reaction Kinetics

1. Define rate of reaction and factors affecting it.
2. Derive the rate law equation with examples.
3. Explain order of reaction and molecularity.
4. Explain activation energy and its importance.
5. Describe collision theory of chemical reactions.

Chapter 12: s-Block Elements

1. Discuss properties of alkali metals.
2. Explain diagonal relationship between Li and Mg.
3. Describe chemical properties of alkaline earth metals.
4. Preparation and properties of sodium hydroxide.
5. Write notes on calcium carbonate and its uses.

Chapter 13: Group IIIA and IVA Elements

1. Discuss properties and uses of aluminum.
2. Explain amphoteric nature of aluminum oxide.
3. Write notes on silicones and their uses.
4. Explain allotropy of carbon.
5. Preparation and uses of silicon dioxide.

Chapter 14: Group VA and VIA Elements

1. Properties and uses of nitrogen.
2. Preparation and properties of ammonia.
3. Preparation and uses of nitric acid.
4. Write notes on ozone and its importance.
5. Preparation and properties of sulphuric acid.

Chapter 15: Transition Elements

1. General characteristics of transition elements.
2. Variable oxidation states of transition metals.
3. Catalytic properties of transition metals.
4. Colored compounds of transition metals.
5. Magnetic properties of transition metals.

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Chapter 16: Fundamental Principles of Organic Chemistry

1. Define isomerism and explain its types with examples.
2. Classification of organic compounds.
3. Write notes on structural formula and functional groups.
4. Explain hybridization in organic molecules.
5. Nomenclature of alkanes, alkenes, and alkynes.

Chapter 17: Alkanes

1. Preparation of alkanes by Wurtz reaction.
2. Physical and chemical properties of alkanes.
3. Write notes on substitution reactions of alkanes.
4. Explain isomerism in alkanes.
5. Combustion of alkanes.

Chapter 18: Alkenes and Alkynes

1. Preparation of alkenes by dehydration of alcohols.
2. Addition reactions of alkenes.
3. Preparation and properties of acetylene.
4. Polymerization of alkenes.
5. Explain Markovnikov’s rule with examples.

Chapter 19: Aromatic Hydrocarbons

1. Structure of benzene according to Kekulé.
2. Resonance in benzene.
3. Electrophilic substitution reactions of benzene.
4. Physical and chemical properties of benzene.
5. Uses of aromatic hydrocarbons.

Chapter 20: Alkyl Halides

1. Preparation of alkyl halides.
2. Nucleophilic substitution reactions.
3. Elimination reactions of alkyl halides.
4. Physical properties of alkyl halides.
5. Uses of alkyl halides.

Study Tips for important long questions of chemistry 1st year chapter wise 2025

• Prepare notes chapter wise.
• Always include diagrams and chemical equations in answers.https://regilia.com/
• Practice past papers for repeated questions.
• Write answers in a systematic and clean manner.
• Highlight important formulas, laws, and reactions.

important long questions of chemistry 1st year chapter wise 2025 (Chapter War)

Q1: Are these long questions enough for exam preparation?
Ans:Yes, these important long questions of chemistry 1st year chapter wise 2025 are the most expected and repeated ones. However, you should also revise short questions and MCQs for complete preparation.

Q2: Do all boards follow the same important questions?
Ans:Almost 70–80% of these questions are common in Punjab, Federal, Sindh, and KPK boards. But slight variations may exist, so always check your board’s past papers.

Q3: What’s the best way to attempt long questions in exams?
Ans:Write in a neat, step-by-step manner. Use headings, sub-points, diagrams, and underline key terms. This ensures maximum marks.

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