When two or more reactants combine to form a single product, which type of reaction is it?
Answer and explanation
Correct answer: Combination reaction
A combination reaction is identified by the pattern A + B → AB: two or more reactants join to form one product. For example, 2Mg + O₂ → 2MgO shows magnesium and oxygen forming magnesium oxide. Thus option A is correct. Decomposition has one reactant and several products, whereas displacement and double displacement involve replacement or exchange rather than simple formation of one product.
Frequently asked questions
What is the correct answer to this question?
Combination reaction
Why is this the correct answer?
A combination reaction is identified by the pattern A + B → AB: two or more reactants join to form one product. For example, 2Mg + O₂ → 2MgO shows magnesium and oxygen forming magnesium oxide. Thus option A is correct. Decomposition has one reactant and several products, whereas displacement and double displacement involve replacement or exchange rather than simple formation of one product.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
