GK / GS · Chapter 4
Chemical Bonding & Reactions PYQs
A match is struck, iron turns to rust, milk turns to curd, a cracker bursts and a battery lights a torch.
Why Atoms Combine: Octet Concept and Ionic Bonds 2 PYQs
- What are oligosaccharides?Delhi Police 2026 · 02 Jan 2026
- Which of the following elements naturally exists as a diatomic molecule?DSSSB 2026 · 14 Oct 2026
Covalent, Coordinate, Hydrogen and Metallic Bonds; Forces Between Molecules 1 PYQs
Chemical Equations, Balancing and the Laws of Chemical Combination 5 PYQs
- What is the definition of stoichiometry?Delhi Police 2026 · 21 Jan 2026
- Who formulated the Law of Conservation of Mass through quantitative chemical experiments?DSSSB 2026 · 25 Sep 2026
- What law states that the total mass remains unchanged during a chemical reaction?DSSSB 2026 · 30 Sep 2026
- What does the Law of Conservation of Mass state?DSSSB 2026 · 01 Oct 2026
- Who formulated the law of conservation of mass for chemical reactions?DSSSB 2026 · 05 Oct 2026
Types of Chemical Reactions 2 PYQs
- Which of the following statements is correct regarding Cobalt? I. Jharkhand has cobalt deposits. II. Cobalt is used in rechargeable batteries.SSC MTS 2026 · 12 Feb 2026
- What is the method called that is used to convert units from one system to another?Delhi Police 2026 · 21 Jan 2026
Oxidation, Reduction and Redox Reactions in Daily Life 4 PYQs
- Which one of the following statements about oxidation and reduction in an electrochemical cell is correct?Delhi Police 2026 · 16 Jan 2026
- According to Faraday's first law of electrolysis, the mass of a substance deposited at an electrode is:Delhi Police 2026 · 21 Jan 2026
- Which of the following elements exists naturally as a diatomic molecule?DSSSB 2026 · 24 Sep 2026
- During the rusting process, iron atoms lose electrons. How is this chemical change in iron classified?DSSSB 2026 · 28 Sep 2026
Energy Changes and Combustion: Exothermic and Endothermic Reactions 2 PYQs
- What is the term for the chemical process in which a substance reacts with oxygen to give off heat?SSC MTS 2026 · 19 Feb 2026
- What substances were used in the head of early matches to initiate combustion? I. Antimony trisulphide II. Potassium chlorate III. White phosphorusSSC MTS 2026 · 05 Feb 2026
Rate of Reaction, Catalysts and Equilibrium 6 PYQs
- Which one of the following statements about the effect of a catalyst on a chemical reaction is correct?Delhi Police 2026 · 21 Jan 2026
- Which of the following characteristics is NOT generally associated with catalytic reactions?Delhi Police 2026 · 21 Jan 2026
- Which of the following statements correctly distinguishes homogeneous catalysis from heterogeneous catalysis?Delhi Police 2026 · 16 Jan 2026
- In industrial chemistry, the Haber-Bosch process remains one of the most significant methods for synthesising ammonia from elemental nitrogen and…Delhi Police 2026 · 20 Jan 2026
- Finely powdered solid catalysts are more effective than large lumps of the same material mainly because they:Delhi Police 2026 · 20 Jan 2026
- In dairy industries, milk is converted into curd by adding a small amount of previously prepared curd as a starter culture. During this process,…Delhi Police 2026 · 21 Jan 2026