Observe the following reactions:I. CO_{(g)} + | vedclass

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(C) In reaction $I$,the catalytic hydrogenation of carbon monoxide to formaldehyde $(HCHO)$ is carried out using copper $(Cu)$ as a catalyst at high t

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$Cu, Ni$

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(C) In reaction $I$,the catalytic hydrogenation of carbon monoxide to formaldehyde $(HCHO)$ is carried out using copper $(Cu)$ as a catalyst at high temperature and pressure.In reaction $II$,the catalytic hydrogenation of carbon monoxide to methane $(CH_4)$ is carried out using nickel $(Ni)$ as a catalyst at approximately $573 \ K$.Therefore,the catalysts $X$ and $Y$ are $Cu$ and $Ni$ respectively.

Observe the following reactions:
$I$. $CO_{(g)} + H_{2(g)} \xrightarrow{X} HCHO_{(g)}$
$II$. $CO_{(g)} + 3 H_{2(g)} \xrightarrow{Y} CH_{4(g)} + H_2O_{(g)}$
The catalysts $X$ and $Y$ in the above reactions are respectively:

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Observe the following reactions:$I$. $CO_{(g)} + H_{2(g)} \xrightarrow{X} HCHO_{(g)}$$II$. $CO_{(g)} + 3 H_{2(g)} \xrightarrow{Y} CH_{4(g)} + H_2O_{(g)}$The catalysts $X$ and $Y$ in the above reactions are respectively: