A) Water and sulphide
B) Water and \[C{{O}_{2}}\]
C) \[C{{O}_{2}}\] and \[{{H}_{2}}S\]
D) \[{{H}_{2}}O\] and \[{{H}_{2}}S\]
Correct Answer: B
Solution :
\[ZnC{{O}_{3}}\to ZnO+C{{O}_{2}}\] In calcination ore is heated in absence of air in a reverberatory furnace to remove moisture and \[C{{O}_{2}}\]
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