Which one of the following is not an example | vedclass

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(D) Calcination is the process of heating an ore in the absence or limited supply of air to remove moisture and volatile impurities.Option $A$ is the

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$2PbS + 3O_2 \xrightarrow{\Delta} 2PbO + 2SO_2$

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(D) Calcination is the process of heating an ore in the absence or limited supply of air to remove moisture and volatile impurities.Option $A$ is the dehydration of limonite (calcination).Option $B$ is the calcination of limestone.Option $C$ is the calcination of dolomite.Option $D$ $(2PbS + 3O_2 \xrightarrow{\Delta} 2PbO + 2SO_2)$ involves the reaction of sulfide ore with oxygen,which is the definition of roasting.

Which one of the following is not an example of calcination?

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