MCQ
Minimum ionic radius in $N-$ family
- A$Bi$
- B$P$
- C$As$
- ✓$Sb$
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$X$ is
$MgO(s) + C(s) \to Mg(s) + CO(g)$, for which $\Delta _r{H^o} = + 491.1\,kJ\,mo{l^{ - 1}}$ and $\Delta _r{S^o} = 198.0\,Jk^{-1}\,mo{l^{ - 1}}$ is not feasible at $298\, K$. Temperature above which reaction will be feasible is.....$K$
$(I)$ Bromine water
$(II)$ Tollen's reagents
$(III)$ Shiff's reagent