Last Updated on June 8, 2026 by Ahsa.Pk
The most important chemistry chapter 1 short questions for class 11. The 1st-year chapter 1 of chemistry is related to basic concepts. 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 1 Short Questions for Class 11
- Classify NaCl, MgCl₂, and PCl₅ as acidic, basic, or neutral.
- Why are the oxides of Na and Mg more ionic than the oxides of N and P?
- Describe the reaction of Na₂O with water and identify the product’s nature.
- Why is AlCl₃ considered an acidic halide while NaCl is neutral?
- Predict whether PCl5 and NCl3 would be acidic or basic.
- Why is SiO₂ considered an acidic oxide despite being a metalloid compound?
- Give the reaction of ZnO with both HCl and NaOH to prove its amphoteric nature.
- What causes the difference in oxidation numbers between SO₂ and SO₃?
- Why is sodium kept under kerosene oil while magnesium is not?
- What is hydration in the context of neutral chlorides like NaCl?
- Compare the pH behavior of aqueous solutions of MgCl₂ and AlCl₃.
- Why do sulfur and phosphorus show variable oxidation numbers?
- Describe the nature of oxides formed by Period 3 non-metals.
- Write balanced equations for the reaction of Mg with oxygen.
- Explain the term “hydrolysis” in the context of acidic chlorides.
- Why is the oxidation number of 3rd-period elements in oxides always positive?
- Compare the reactivity of Na and Mg toward chlorine.
- What is the important function of the “stair-step line” on the periodic table?
- How does electronic configuration help determine the block of an element?
Download Class 11 Chemistry Book
Important Short Questions of Chemistry 1st Year
Guess Papers for Class 11
Schemes of Class 11
