The product $B$ is formed by the reaction of cyclohexanone with hydroxylamine $(NH_2OH)$ to form an oxime $(A)$,followed by a Beckmann rearrangement using polyphosphoric acid $(PPA)$. Identify the product $B$.

In the given reaction sequence,the percentage of oxygen in compound $(Q)$ is . . . . . . $\%$. (Nearest integer)

Match the following reactions in List-$I$ with their products in List-$II$.

List-$I$ (Reaction)	List-$II$ (Product)
$A$. $\text{Ketone} + NaBH_4$	$I$. $1^\circ$-alcohol
$B$. $\text{Ester} + LiAlH_4$	$II$. $3^\circ$-alcohol
$C$. $RMgX + \text{Ketone}$	$III$. $2^\circ$-alcohol
	$IV$. $\text{Alkane}$

$A$ carbonyl compound $P$,which gives a positive iodoform test,undergoes reaction with $MeMgBr$ followed by dehydration to give an olefin $Q$. Ozonolysis of $Q$ leads to a dicarbonyl compound $R$,which undergoes intramolecular aldol reaction to give predominantly $S$.
$P$ $\xrightarrow[\substack{2. H^{+}, H_2 O \\ 3. H_2 SO_4, \Delta}]{1. MeMgBr} Q$ $\xrightarrow[2. Zn, H_2 O]{1. O_3} R$ $\xrightarrow[2. \Delta]{1. OH^{-}} S$
$1.$ The structure of the carbonyl compound $P$ is
$2.$ The structures of the products $Q$ and $R$,respectively,are
$3.$ The structure of the product $S$ is
Give the answer for questions $1, 2$ and $3.$

$CH_3COOCH_2CH_3 + PhMgBr_{(excess)} \to P \xrightarrow{H_2O} Q$;
$Q$ is

Which of the following tests is $NOT$ shown by acetaldehyde?