FeCr2O4 chromite is converted to Cr by following steps -Chromite NaCrO4 Cr2O3 CrReagents in I- II and III might be - I- Step II-Step III-Step

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Calcination

FeCr2O4 chrom...

Question

$F e C r_{2} O_{4}$ (chromite) is converted to $C r$ by following steps :
Chromite $I \to$ $N a C r O_{4}$ $I I - \to$ $C r_{2} O_{3}$ $I I I - - \to$ $C r$
Reagents in I, II and III might be :
I- Step II-Step III-Step

\begin{matrix} N a_{2} C O_{3} / a i r, △ & C & C \end{matrix}

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\begin{matrix} N a O H / a i r, △ & C, △ & A l, △ \end{matrix}

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\begin{matrix} N a_{2} C O_{3} / a i r, △ & C, △ & C, △ \end{matrix}

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\begin{matrix} c o n c . H_{2} S O_{4}, △ & N H_{4} C l, △ & C, △ \end{matrix}

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Similar questions

F e C r_{2} O_{4}

C h r o m i t e I \to N a_{2} C r O_{4} I I \to C r_{2} O_{3} I I I \to C r

F e C r_{2} O_{4}

N a_{2} C r O_{4}

N a_{2} C r_{2} O_{7}

F e C r_{2} O_{4} + N a O H + a i r ⟶ (A) + F e_{2} O_{3}

(A) + (B) ⟶ N a_{2} C r_{2} O_{7}

N a_{2} C r_{2} O_{7} + X △ ⟶ C r_{2} O_{3}

C r_{2} O_{3} + Y △ ⟶ C r

F e {C r}_{2} O_{4}

C r

I \to {N a}_{2} C r O_{4} I I - \to {C r}_{2} O_{3} I I I - - \to C r

I, I I

I I I

Indicate the steps in the preparation of:

(i) K2Cr2O7 from chromite ore.

(ii) KMnO4 from pyrolusite ore.

K_{2} {C r}_{2} O_{7}

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