$$ \text { A compound }[X] \text { undergoes reactions as given. Identify compounds }[C] \text { and }[D] \text { formed in these reactions. } $$

$$ [\mathrm{A}] \xrightarrow{\mathrm{Cr}_2 \mathrm{O}_7^{2-} / \mathrm{H}^{+}}[\mathrm{C}] $$
$$ [\text { B }] \xrightarrow[\text { (ii) } \mathrm{Na}_2 \mathrm{CO}_{3(\text { aq })}+\mathrm{I}_2]{\text { (i)aq. } \mathrm{KOH}} [\mathrm{D}] \quad+\mathrm{CH}_3 \mathrm{COONa}$$
$$ \text { [C]: Benzoquinone [D]: lodoform } $$
[C]: Benzene [D]: 2-iodo-propane
[C]: Benzoic acid [D]: lodoform
$$ \text { [C]: 4-lodophenol [D]: 1-iodo-propane } $$
The $\Delta \mathrm{G}^{\circ}$ for the reaction, $C d^{2+}(a q)+Z n(s) \rightarrow Z n^{2+}(a q)+C d(s)$ is:
$\left[E_{C d^{2+} / C d}^o=-0.403, E_{Z n^{2+} / Z n}^o=-0.763 \mathrm{~V}\right]$$-69.5 k J$
$-72.2 kJ$
$-44.5 kJ$
$-50 kJ$
$$ \text { Identify the correct structure of o-ethyl anisole. } $$




$$ \text { Identify the reagents, }[A] \text { and }[B] \text { used up when Salicylic acid undergoes the following reactions: } $$

A: $\frac{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}}{\mathrm{H}^{+}}$ $\mathrm{B}: \frac{\mathrm{CH}_3 \mathrm{CHO}}{\mathrm{H}^{+}}$
A: $\frac{\mathrm{CH}_3 \mathrm{COO}^{-}}{\mathrm{OH}^{-}}$ B: $\frac{\mathrm{CH}_3 \mathrm{Cl}}{\text { (warm) }}$
$\mathrm{A}: \frac{\mathrm{CH}_3 \mathrm{OH}}{\mathrm{H}^{+}}$ B: $\frac{\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}}{\mathrm{H}^{+}(\text {warm })}$
$$ \mathrm{A}=\frac{\mathrm{CH}_3 \mathrm{COCl}}{(\text { warm })} \quad \mathrm{B}=\frac{\mathrm{CH}_3 \mathrm{Br}}{(\text { warm })} $$
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