Which of the following processes involves smelting?

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Al2O3⋅2H2O⟶ Heat Al2O3+2H2O

ZnCO3⟶ Heat ZnO+CO2

2PbS+3O2⟶ Heat 2PbO+2SO2

Fe2O3+3C⟶ Heat 2Fe+3CO

answer is D.

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Detailed Solution

As smelting is carried out by using carbon:Fe2O3+3C⟶Δ2Fe+3CO

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