A molecule (X) with following structure under mild acidic condition is hydrolysed to produce (Y) and (Z). Identify the correct statements about (Y) and (Z).

A. Both (Y) and (Z) have same molar mass.

B. (Y) and (Z) can be distinguished from each other by NaHCO$_3$.

C. (Y) and (Z) react with HCN with same rates.

D. (Y) and (Z) undergo addition reaction with 2,4-DNP.

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Identify compounds A and E in the following reaction sequence.

The correct order of acidic strength of the major products formed in the given reactions, is :

A. $\mathrm{PhNH}_2 \xrightarrow[\substack{\text { (2) } \mathrm{CuCN}^2 \\ \text { (3) } \mathrm{H}_3 \mathrm{O}^{+} / \Delta}]{\text { (1) } \mathrm{NaNO}_2+\mathrm{HCl}\left(<5^{\circ} \mathrm{C}\right)}[\mathrm{A}]$

B. $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CHO} \xrightarrow[ \Delta]{\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}, \mathrm{OH}^{-}}[\mathrm{B}]$

C. $\mathrm{CH}_4+\mathrm{O}_2 \xrightarrow[\text { (ii) } \mathrm{Na}_2 \mathrm{Cr}_2 \mathrm{O}_7 / \mathrm{H}^{+}]{\text {(i) } \mathrm{Mo}_2 \mathrm{O}_3}[\mathrm{C}]$

D. $\mathrm{PhCH}_2 \mathrm{MgBr}+\mathrm{CO}_2 \xrightarrow[\mathrm{H}_3 \mathrm{O}^{+}]{\text {Dry ether }}[\mathrm{D}]$

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