A) \[CaC{{O}_{3}}\]
B) \[CaO\]
C) \[{{H}_{2}}S{{O}_{4}}\]
D) \[ZnO\]
Correct Answer: B
Solution :
\[CaO+C{{O}_{2}}\to CaC{{O}_{3}}\] \[CaO+{{H}_{2}}O\to Ca{{(OH)}_{2}}\]
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