The major products $Q$ and $R$ from the following reactions,respectively are:

In Column - $I$ the structure of the compound is given,in Column - $II$ the boiling point,and in Column - $III$ the functional group is given. Find the correct match for Column - $I$ from Column - $II$ and Column - $III$.

Column - $I$ (Formula)	Column - $II$ (Boiling Point)	Column - $III$ (Group)
$(A)$ $CH_3COOH$	$(i)$ $309 \ K$	$(m)$ Alkane
$(B)$ $CH_3CH_2CH_2OH$	$(ii)$ $322 \ K$	$(n)$ Ketone
$(C)$ $CH_3COCH_3$	$(iii)$ $329 \ K$	$(o)$ Aldehyde
$(D)$ $CH_3CH_2CHO$	$(iv)$ $391 \ K$	$(p)$ Carboxylic acid
$(E)$ $CH_3CH_2CH_2CH_2CH_3$	$(v)$ $370 \ K$	$(q)$ Alcohol

What is the correct order of increasing acidity for the following compounds?
$I$: Phenol
$II$: Cyclohexanol
$III$: Cyclohexanecarboxylic acid
$IV$: Ethynylcyclohexane

Match List-$I$ and List-$II$.

List-$I$	List-$II$
$(a)$ $R-COCl \to R-CHO$	$(i)$ $Br_2 / NaOH$
$(b)$ $R-CH_2-COOH \to R-CH(Cl)-COOH$	$(ii)$ $H_2 / Pd-BaSO_4$
$(c)$ $R-CONH_2 \to R-NH_2$	$(iii)$ $Zn(Hg) / \text{Conc. } HCl$
$(d)$ $R-CO-CH_3 \to R-CH_2-CH_3$	$(iv)$ $Cl_2 / \text{Red } P, H_2O$

Choose the correct answer from the options given below:

Give plausible explanation for each of the following:
$(i)$ Cyclohexanone forms cyanohydrin in good yield but $2,2,6-$trimethylcyclohexanone does not.
$(ii)$ There are two $-NH_2$ groups in semicarbazide. However,only one is involved in the formation of semicarbazones.
$(iii)$ During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst,the water or the ester should be removed as soon as it is formed.

Arrange the following labelled hydrogens in decreasing order of acidity.