Which of the following processes involve the roasting process? – McqOptions

MCQOPTIONS

1.	Which of the following processes involve the roasting process?
A.	\[ZnC{{O}_{3}}\to ZnO+C{{O}_{2}}\]
B.	\[F{{e}_{2}}{{O}_{3}}+3C\to 2Fe+3CO\]
C.	\[2PbS+3{{O}_{2}}\to 2PbO+2S{{O}_{2}}\]
D.	\[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\to A{{l}_{2}}{{O}_{3}}+2{{H}_{2}}O\]
Answer» D. \[A{{l}_{2}}{{O}_{3}}.2{{H}_{2}}O\to A{{l}_{2}}{{O}_{3}}+2{{H}_{2}}O\]

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