Chapter Mock Test
Total Marks:25
Duration:30 min
Total Questions:25
Difficulty:Mixed
Test Structure
- —Section A: 10 MCQs (1 mark each)
- —Section B: 5 Short Answer (2 marks each)
- —Section C: 1 Long Answer (5 marks)
Before taking the test
- —Memorize all five types of reactions: combination, decomposition, displacement, double displacement, and redox
- —Practice balancing equations using the hit-and-trial method — always include state symbols (s), (l), (g), (aq)
- —Know observations from NCERT activities: FeSO₄ heating (green→brown), Fe + CuSO₄ (blue→green), AgCl in sunlight (white→grey)
- —Understand oxidation, reduction, and identify oxidising/reducing agents in redox reactions like CuO + H₂
- —Remember: corrosion needs moisture + oxygen; rancidity is prevented by nitrogen flushing, antioxidants, airtight containers
- —Know the difference between exothermic (CaO + H₂O, respiration) and endothermic (CaCO₃ decomposition, photosynthesis) reactions