Class 10 Science Chapter 1: Chemical Reactions and Equations — Important Questions & Mock Tests
Practice Chemical Reactions and Equations topic-wise important questions, MCQs and 1, 2, 3 and 5 mark questions for CBSE revision.
300 Questions 47 Topics MCQs: 100 1 Mark: 50 2 Mark: 50 3 Mark: 50 5 Mark: 50
Topic-wise important and practice questions
Review question distribution across chapter topics for MCQs, 1 Mark questions, 2 Mark questions, 3 Mark questions, 5 Mark questions.
| Topic | MCQ | 1 Mark | 2 Mark | 3 Mark | 5 Mark | Total |
|---|---|---|---|---|---|---|
| Displacement Reaction | 1 | 8 | 11 | 10 | 10 | 40 |
| Photochemical Decomposition | 5 | 4 | 4 | 4 | 4 | 21 |
| Balancing Chemical Equations | 9 | 1 | 4 | 2 | 3 | 19 |
| Electrolytic Decomposition | 4 | 4 | 3 | 3 | 3 | 17 |
| Thermal Decomposition of Lead Nitrate | 0 | 3 | 4 | 5 | 4 | 16 |
| Corrosion | 7 | 2 | 0 | 1 | 1 | 11 |
| Double Displacement and Precipitation Reaction | 0 | 4 | 2 | 2 | 3 | 11 |
| Combination and Exothermic Reaction | 0 | 4 | 2 | 2 | 2 | 10 |
| Oxidation | 10 | 0 | 0 | 0 | 0 | 10 |
| Thermal Decomposition of Ferrous Sulphate | 1 | 2 | 2 | 2 | 2 | 9 |
| Exothermic Reaction | 0 | 2 | 2 | 2 | 2 | 8 |
| Oxidation and Reduction of Copper | 0 | 3 | 2 | 2 | 1 | 8 |
| Oxidation of Copper | 0 | 1 | 2 | 3 | 2 | 8 |
| Thermal Decomposition of Calcium Carbonate | 0 | 2 | 2 | 2 | 2 | 8 |
| Combustion and Exothermic Reaction | 0 | 1 | 2 | 2 | 2 | 7 |
| Displacement Reactions | 7 | 0 | 0 | 0 | 0 | 7 |
| Precipitation Reactions | 7 | 0 | 0 | 0 | 0 | 7 |
| Thermal Decomposition Reactions | 7 | 0 | 0 | 0 | 0 | 7 |
| Exothermic Reactions | 4 | 0 | 1 | 1 | 0 | 6 |
| Oxidation and Reduction | 0 | 2 | 1 | 1 | 2 | 6 |
| Rancidity and Its Prevention | 5 | 0 | 0 | 0 | 0 | 5 |
| Reduction of Metal Oxide | 0 | 2 | 1 | 1 | 1 | 5 |
| Combination Reactions | 4 | 0 | 0 | 0 | 0 | 4 |
| Displacement of Copper by Iron | 4 | 0 | 0 | 0 | 0 | 4 |
| Indicators of a Chemical Reaction | 4 | 0 | 0 | 0 | 0 | 4 |
| Rancidity | 0 | 1 | 1 | 1 | 1 | 4 |
| Writing Chemical Equations | 4 | 0 | 0 | 0 | 0 | 4 |
| Chemical Reactions | 0 | 2 | 0 | 0 | 1 | 3 |
| Combination Reaction | 0 | 1 | 1 | 1 | 0 | 3 |
| Decomposition Reactions | 0 | 0 | 1 | 1 | 1 | 3 |
| Reduction of Copper Oxide by Hydrogen | 3 | 0 | 0 | 0 | 0 | 3 |
| State Symbols in Chemical Equations | 3 | 0 | 0 | 0 | 0 | 3 |
| Whitewashing Reactions | 0 | 0 | 1 | 0 | 2 | 3 |
| Double Displacement Reaction | 0 | 0 | 1 | 0 | 1 | 2 |
| Double Displacement Reactions | 2 | 0 | 0 | 0 | 0 | 2 |
| Burning of Magnesium | 1 | 0 | 0 | 0 | 0 | 1 |
| Chemical Change | 1 | 0 | 0 | 0 | 0 | 1 |
| Chemical Equations | 0 | 1 | 0 | 0 | 0 | 1 |
| Cleaning Magnesium Ribbon before Burning | 1 | 0 | 0 | 0 | 0 | 1 |
| Decomposition versus Combination Reactions | 1 | 0 | 0 | 0 | 0 | 1 |
| Endothermic Reactions | 1 | 0 | 0 | 0 | 0 | 1 |
| Laboratory Safety during Heating | 1 | 0 | 0 | 0 | 0 | 1 |
| Law of Conservation of Mass | 1 | 0 | 0 | 0 | 0 | 1 |
| Precipitation Reaction | 0 | 0 | 0 | 1 | 0 | 1 |
| Redox Reactions | 1 | 0 | 0 | 0 | 0 | 1 |
| Whitewashing Reaction | 1 | 0 | 0 | 0 | 0 | 1 |
| Writing Chemical Equations with State Symbols | 0 | 0 | 0 | 1 | 0 | 1 |