The reaction is Decomposition but it's not redox reaction

1.	The reaction is Decomposition but it's not redox reaction
Answer» `2HgO to 2H_(2)+O_(2)` `2H_(2)O to 2H_(2)+O_(2)` `MgCO_(3) to MGO +CO_(2)` `KClO_(3) to 2KCl +3O_(2)` ANSWER :C

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