A) \[CaC{{O}_{3}}\xrightarrow{{}}CaO+C{{O}_{2}}\]
B) \[2C+{{O}_{2}}\xrightarrow{{}}2CO\]
C) \[C+{{O}_{2}}\xrightarrow{{}}C{{O}_{2}}\]
D) \[F{{e}_{2}}{{O}_{3}}+3CO\xrightarrow{{}}2Fe+3C{{O}_{2}}\]
Correct Answer: A
Solution :
Bond breaking processes or decomposition processes are endothermic process.
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