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When a single reactant breaks down into two or more products, the reaction is called:
ADecomposition reaction
BCombination reaction
CDisplacement reaction
DNeutralisation reaction
Answer & Solution
Correct answer: A. Decomposition reaction
1. AB → A + B is the general form.
2. CaCO₃ →(heat) CaO + CO₂ is a thermal decomposition.
3. Electrolysis of water and photodecomposition of AgCl are other examples.
_Source: NCERT Class 10 Science Ch 1 §1.2.2 Decomposition Reactions_
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