Which of the following is not a chemical decomposition reaction? * (a) 2Pb3O4 --> 6PbO + O2 (b) Zn + 2HCl --> ZnCl2 +H2 (c) CuCO3 --> CuO + CO2
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Answer:
b) Zn+2HCl-> ZnCl2+H2
Explanation:
it is displacement reaction
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