Which of the following statements is not corr | vedclass

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(D) Calcination is a process of heating an ore strongly in the absence of air or in a limited supply of air. $1$. Carbonate ores are converted into th

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Lower oxidation state oxides are oxidised further

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(D) Calcination is a process of heating an ore strongly in the absence of air or in a limited supply of air. $1$. Carbonate ores are converted into their oxides (e.g.,$ZnCO_3 \rightarrow ZnO + CO_2$). $2$. The temperature is kept below the melting point of the metal to prevent fusion. $3$. Moisture and volatile impurities are removed. $4$. The statement "Lower oxidation state oxides are oxidised further" is incorrect because calcination does not involve oxidation; that process is known as roasting,where ores are heated in the presence of excess air.

Which of the following statements is not correct regarding calcination?

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