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

Choose the correct answer from the options given below :

$$ \text { Given below are two statements for the following reaction sequence. } $$

Statement I : Compound ' $Z$ ' will give yellow precipitate with NaOI .

Statement II : Compound ' Q ' has two different types of ' H ' atoms (aromatic : aliphatic) in the ratio $1: 3$.

In the light of the above statements, choose the correct answer from the options given below :

$$ \text { Given below are the four isomeric compounds }(\mathrm{P}, \mathrm{Q}, \mathrm{R}, \mathrm{~S}) $$

Identify correct statements from below.

A. $\mathrm{Q}, \mathrm{R}$ and S will give precipitate with 2, 4-DNP.

B. $P$ and $Q$ will give positive Bayer's test.

C. Q and R will give sooty flame.

D. R and S will give yellow precipitate with $\mathrm{I}_2 / \mathrm{NaOH}$.

E. Q alone will deposit silver with Tollen's reagent

Choose the correct option.