MCQ
If $HN{O_3}$ changes into ${N_2}O$, the oxidation number is changed by
- A$+2$
- B$-1$
- C$0$
- ✓$+4$
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$[Fe(CN)_6]^{4-} \rightarrow [Fe(CN)_6]^{3-} + e^{-1}\, ;$ $ E^o = -0.35\, V$
$Fe^{2+} \rightarrow Fe^{3+} + e^{-1}\ ;$ $E^o = -0.77\, V$

$COC{l_2}\left( g \right) \rightleftharpoons CO\left( g \right) + C{l_2}$
is an endothermic process. Which of the following will increase the degree of dissociation of $COCl_2$