Zinc blende ore on roasting at above 850° C gives:

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$ZnS$ and ${ZnSO}_{4}$

${CO}_{2}$ and $ZnO$

${SO}_{2}$ and $ZnO$

$Zn$ and ${SO}_{2}$

answer is C.

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Detailed Solution

Zinc blende ore on roasting at above 850° C gives ${SO}_{2}$ and $ZnO$

A zinc sulphide ore is zinc blende, sometimes referred to as zinc sulphide or ZnS. Metal oxides are produced when sulphide ores are heated while in the presence of air, or roasting.

Hence, option C is correct.

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