MCQ
In modern process phosphorus is manufactured by
- ✓Heating a mixture of phosphorite mineral with sand and coke in electric furnace
- BHeating calcium phosphate with coke
- CHeating bone ash with coke
- DHeating the phosphate mineral with sand
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$Fe ^{2+} \rightarrow Fe ^{3+} + e ^{-} \quad E _{ Fe ^{3+} / Fe ^{2+}}=0.77 \,V$
$2 I ^{-} \rightarrow I _{2}+2 e ^{-} \quad E _{ I _{2} / I ^{-}}^{0}=0.54 \,V$
The standard electrode potential for the spontaneous reaction in the cell is $x \times 10^{-2} \,V 298$ $K$. The value of $x$ is .... (Nearest Integer)
$(A)\,\xrightarrow[{excess}]{{Me\, - \,I}}\,(C)\,\xrightarrow[{(ii)\,\,{H^ + }}]{{(i)\,\,NaN{H_2}}}(D)$