Amongst the following chemical reactions the irreversible reaction is�

1.	Amongst the following chemical reactions the irreversible reaction is [MP PMT 1999]
A.	\[{{H}_{2}}+{{I}_{2}}\] ⇌ \[HI\]
B.	\[AgN{{O}_{3}}+NaCl\]⇌\[AgCl+NaN{{O}_{3}}\]
C.	\[CaC{{O}_{3}}\] ⇌\[CaO+C{{O}_{2}}\]
D.	\[{{O}_{2}}+2S{{O}_{2}}\]⇌\[2S{{O}_{3}}\]
Answer» C. \[CaC{{O}_{3}}\] ⇌\[CaO+C{{O}_{2}}\]

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