These are the most important Chemistry chapter 12 short questions for Class 11. The 1st-year chapter 12 of Chemistry is related to reaction kinetics. These questions are for the Punjab Textbook Board and can be used within all of Punjab where this syllabus is taught.
Students are advised to prepare these questions in order to perform the best in the board examination.
Chemistry Chapter 12 Short Questions for Class 11
- Why is photochemical smog becoming more common than classical smog? Explain the chemical reactions involved in its formation.
- What is the construction and function of a catalytic converter?
- Why is sulphur quite unreactive at room temperature?
- Which are the most stable oxidation states of sulphur in water at pH = 0 and pH = 14?
- How does sulphur react with halogens?
- Draw the structures of cyclo-octasulphur (S₈) and sulphuric acid.
- What is the role of sulphur in the vulcanization of rubber?
- What is the composition and the chemical reaction of gunpowder combustion?
- What is the importance of disulfide bridges?
- Write down the self-ionization equation of sulphuric acid and its ionization in water.
- Give two examples where sulphuric acid acts as a dehydrating agent.
- How does V₂O₅ catalyze the formation of SO₃?
- What is the purpose of formation of oleum?
- What are the main categories of sources of NOₓ?
- Differentiate between nitrification and denitrification.
- What is a catalytic converter?
- Write down the natural sources of oxides of nitrogen.
- Ammonia is basic in nature. How?
- Write down the equation for the reaction between conc. H₂SO₄ and copper and explain what type of reaction it is.
- Give the advantages of the contact process for the manufacturing of sulphuric acid (H₂SO₄).
- Why is SO₃ dissolved in H₂SO₄ and not in water?
- H₂SO₄ is a dehydrating agent. Write down some chemical equations to prove it.
- Prove that H₂SO₄ acts as an oxidizing agent.
- Write reactions of H₂SO₄ with NaCl(s) and NaBr(s).
- Write four physical properties of sulphuric acid.
- How does H₂SO₄ react with: (i) Zn (ii) Cu?
- How is arsenic removed in the contact process?
- Write four uses of sulphuric acid.
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Important Short Questions of Chemistry 1st Year







