MCQ
The interaction between $\pi$ bond and lone pair of electrons present on an adjacent atom is responsible for
- AHyperconjugation
- BInductive effect
- CElectromeric effect
- ✓Resonance effect
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$(A)$ Compounds $P$ and $Q$ are carboxylic acids.
$(B)$ Compound $S$ decolorizes bromine water.
$(C)$ Compounds $P$ and $S$ react with hydroxylamine to give the corresponding oximes.
$(D)$ Compound $R$ reacts with dialkylcadmium to give the corresponding tertiary alcohol.
$Fe_2O_{3(s)} + 3CO_{(g)} \rightarrow 2Fe_{(s)} + 3CO_{2(g)};$ $\Delta H = - 26.8\, kJ$
$FeO_{(s)} + CO_{(g)} \rightarrow Fe_{(s)} + CO_{2(g)} \, ;$ $\Delta H = - 16.5\, kJ$
The value of $\Delta H$ for the following reaction
$Fe_2O_{3(s)} + CO_{(g)} \rightarrow 2FeO_{(s)} + CO_{2(g)}$ is ............. $\mathrm{kJ}$