Crey | Which of the following reactions is the metal displacement reaction ? Choose the right option. 2KClO3△−−→2KCl+3O2, Cr2O3+2Al△−−→Al2O3+2Cr, Fe+2HCl→FeCl2+H2↑, 2Pb(NO3)2→2PbO+4NO2+O2↑⏐

Question

Which of the following reactions is the metal displacement reaction ? Choose the right option.

Options :

2KClO3△−−→2KCl+3O2
Cr2O3+2Al△−−→Al2O3+2Cr
Fe+2HCl→FeCl2+H2↑
2Pb(NO3)2→2PbO+4NO2+O2↑⏐

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