A)
I II III \[N{{a}_{2}}C{{o}_{3}}/air,\Delta \] C C
B)
I II III \[NaOH/air,\Delta \] C,\[\Delta \] Al,\[\Delta \]
C)
I II III \[NaOH/air,\Delta \] C,\[\Delta \] Mg,\[\Delta \]
D)
I II III cone. \[{{H}_{2}}S{{O}_{4}},\Delta \] \[N{{H}_{4}}Cl\] C,\[\Delta \]
Correct Answer: B
Solution :
[b] \[FeC{{r}_{2}}{{O}_{4}}\xrightarrow[\Delta ]{NaOH/air}N{{a}_{2}}Cr{{O}_{4}}\xrightarrow{C,\Delta }C{{r}_{2}}{{O}_{3}}\]\[\xrightarrow{A1,\Delta }Cr\]You need to login to perform this action.
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