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MCQ
Which of the following is a decomposition reaction?
Unit-6 Stoichiometry
A C + O2 gives CO2
B CaCO3 gives CaO + CO2
C Zn + CuSO4 gives ZnSO4 + Cu
D NaCl + AgNO3 gives AgCl + NaNO3
Explanation

A single compound (CaCO3) breaks into two simpler substances, so it is a decomposition reaction.

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