Arrange the following $(w, x, y, z)$ in decreasing order of their boiling points.

Which of the following compounds will evolve hydrogen on treatment with metal?

Number of isomeric compounds with molecular formula $C_9H_{10}O$ which $(i)$ do not dissolve in $NaOH$ $(ii)$ do not dissolve in $HCl$ $(iii)$ do not give orange precipitate with $2,4-DNP$ $(iv)$ on hydrogenation give identical compound with molecular formula $C_9H_{12}O$ is $...........$

The product $Z$ of the above reaction is:

$A$ $\xleftarrow{CH_3OH, CH_3O^{-}}$ ($1$-methyl$-6-$oxabicyclo[$3.1$.$0$]hexane) $\xrightarrow{CH_3OH, H_2SO_4}$ $B$
$A$ $\&$ $B$ are :

Match the following:

Column-$I$: Compound / Reagent	Column-$II$: Other name / Chemical / Process
$A$. Methanol	$I$. Lucas reagent
$B$. $ZnCl_2$ / Conc. $HCl$	$II$. Baeyer's reagent
$C$. Rectified spirit	$III$. Wood spirit
$D$. Dil. $KMnO_4$	$IV$. $95 \% C_2H_5OH$
-	$V$. $75 \% C_2H_5OH$
-	$VI$. $90 \% C_3H_7OH$

The correct match is: