Which of the following compounds on heating d | vedclass

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(C) $MgCl_2 \cdot 6H_2O \xrightarrow{\Delta} MgO + 2HCl + 5H_2O$ (Produces metal oxide)$2K_2Cr_2O_7 \xrightarrow{\Delta} 2K_2CrO_4 + Cr_2O_3 + \frac{3

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$K_2CO_3$

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(C) $MgCl_2 \cdot 6H_2O \xrightarrow{\Delta} MgO + 2HCl + 5H_2O$ (Produces metal oxide)$2K_2Cr_2O_7 \xrightarrow{\Delta} 2K_2CrO_4 + Cr_2O_3 + \frac{3}{2}O_2$ (Produces metal oxide $Cr_2O_3$)$K_2CO_3 \xrightarrow{\Delta} 	ext{No decomposition, only melts}$ (Does not produce metal oxide)$Cu(NO_3)_2 \xrightarrow{\Delta} CuO + 2NO_2 + \frac{1}{2}O_2$ (Produces metal oxide $CuO$)

Which of the following compounds on heating does not produce a metal oxide?

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