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(C) In the reaction $Ca_{(s)} + 2H_2O_{(l)} \rightarrow Ca(OH)_{2(aq)} + H_{2(g)}$,the oxidation state of $Ca$ changes from $0$ to $+2$ (oxidation) an

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for either intermolecular redox reaction or displacement reaction.

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(C) In the reaction $Ca_{(s)} + 2H_2O_{(l)} \rightarrow Ca(OH)_{2(aq)} + H_{2(g)}$,the oxidation state of $Ca$ changes from $0$ to $+2$ (oxidation) and the oxidation state of $H$ in $H_2O$ changes from $+1$ to $0$ (reduction).This is a redox reaction where one element $(Ca)$ displaces hydrogen from water.Therefore,it is classified as a displacement reaction (specifically,a metal displacement reaction) and it is an intermolecular redox reaction.

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Ca_{(s)} + 2H_2O_{(l)} \xrightarrow{R.T.} Ca(OH)_{2(aq)} + H_{2(g)} \uparrow$

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Assign $A$,$B$,$C$,$D$ from the given type of reaction.$Ca_{(s)} + 2H_2O_{(l)} \xrightarrow{R.T.} Ca(OH)_{2(aq)} + H_{2(g)} \uparrow$