Chemical Reactions and Equations
47 CBSE Class 10 Science practice questions with answers and worked solutions.
About this chapter
- Difficulty: 31 easy · 16 moderate.
- Most-asked subtopics: Displacement and Double Displacement Reactions (15), Writing and Balancing Chemical Equations (12), Combination and Decomposition Reactions (10).
- Updated 20 September 2026.
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#1Writing and Balancing Chemical Equations
- Set · 3 questionsWrite the balanced equation for the following chemical reactions.
#2Writing and Balancing Chemical Equations
#3Writing and Balancing Chemical Equations
#4Writing and Balancing Chemical Equations
- Set · 2 questionsWrite a balanced chemical equation with state symbols for the following reactions.
#5Displacement and Double Displacement Reactions
#6Writing and Balancing Chemical Equations
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- Set · 2 questionsA solution of a substance 'X' is used for whitewashing.
#7Combination and Decomposition Reactions
#8Combination and Decomposition Reactions
#9Combination and Decomposition Reactions
#10Displacement and Double Displacement Reactions
#11Displacement and Double Displacement Reactions
- Set · 2 questionsIdentify the substances that are oxidised and the substances that are reduced in the following reactions.
#12Oxidation and Reduction
#13Oxidation and Reduction
#14Oxidation and Reduction
#15Displacement and Double Displacement Reactions
#16Displacement and Double Displacement Reactions
#17Writing and Balancing Chemical Equations
- Set · 4 questionsTranslate the following statements into chemical equations and then balance them.
#18Writing and Balancing Chemical Equations
#19Writing and Balancing Chemical Equations
#20Displacement and Double Displacement Reactions
#21Displacement and Double Displacement Reactions
- Set · 4 questionsBalance the following chemical equations.
#22Writing and Balancing Chemical Equations
#23Writing and Balancing Chemical Equations
#24Writing and Balancing Chemical Equations
#25Writing and Balancing Chemical Equations
- Set · 4 questionsWrite the balanced chemical equations for the following reactions.
#26Combination and Decomposition Reactions
#27Displacement and Double Displacement Reactions
#28Displacement and Double Displacement Reactions
#29Displacement and Double Displacement Reactions
- Set · 4 questionsWrite the balanced chemical equation for the following and identify the type of reaction in each case.
#30Displacement and Double Displacement Reactions
#31Combination and Decomposition Reactions
#32Combination and Decomposition Reactions
#33Displacement and Double Displacement Reactions
#34Combination and Decomposition Reactions
#35Combination and Decomposition Reactions
#36Combination and Decomposition Reactions
#37Combination and Decomposition Reactions
#38Displacement and Double Displacement Reactions
#39Displacement and Double Displacement Reactions
#40Displacement and Double Displacement Reactions
- Set · 2 questionsExplain the following in terms of gain or loss of oxygen with two examples each.
#41Oxidation and Reduction
#42Oxidation and Reduction
#43Oxidation and Reduction
#44Corrosion and Rancidity
#45Corrosion and Rancidity
- Set · 2 questionsExplain the following terms with one example each.
#46Corrosion and Rancidity
#47Corrosion and Rancidity