alleryStart learning →A reaction in which two or more reactants combine to form a single product is a
Adecomposition reaction
Bcombination reaction
Cdisplacement reaction
Ddouble displacement reaction
Answer & Solution
Correct answer: B. combination reaction
1. When several substances join to give one product, it is a combination reaction.
2. Example: CaO + H₂O → Ca(OH)₂.
3. The reverse, one reactant giving many products, is decomposition.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch1 'Chemical Reactions and Equations', §1.2_
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