alleryStart learning →The breaking down of a single compound into two or more substances is a
Acombination reaction
Bdisplacement reaction
Cneutralisation reaction
Ddecomposition reaction
Answer & Solution
Correct answer: D. decomposition reaction
1. When one reactant splits into simpler products, it is a decomposition reaction.
2. Example: CaCO₃ → CaO + CO₂ (on heating).
3. It is the opposite of a combination reaction.
_Source: Karnataka SSLC (KSEEB) Class 10 Science, Ch1 'Chemical Reactions and Equations', §1.2_
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