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Which of the following chemical equation represents double displacement reaction.a) 2Mg + O2 → 2MgOb) CaCO3 \(\overset{heat}{\longrightarrow}\) CaO + CO2c) CuSO4 + Zn → ZnSO4 + Cud) AgNO3 + NaCl → AgCl + NaNO3 |
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Answer» d) AgNO3 + NaCl → AgCl + NaNO3 |
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