For the identification of $\beta$-naphthol using dye test,it is necessary to use :

Match List-$I$ with List-$II$:

List-$I$ (Reagents used)	List-$II$ (Compound with functional group detected)
$A.$ Alkaline solution of copper sulphate and sodium citrate	$I.$ $C_6H_5CH(OH)CH_3$
$B.$ Neutral $FeCl_3$ solution	$II.$ $CH_3CH(NH_2)CH_3$
$C.$ Alkaline chloroform solution	$III.$ $C_6H_5CH_2CHO$
$D.$ Potassium iodide and sodium hypochlorite	$IV.$ $m-C_2H_5C_6H_4OH$

Choose the correct answer from the options given below:

Which of the following properties is $NOT$ applicable to $CH_3CN$ (Ethanenitrile)?

Which of the following does not react with $HNO_2$?

Hinsberg's reagent is

Give one chemical test to distinguish between the following pairs of compounds:
$(i)$ Methylamine and dimethylamine
$(ii)$ Secondary and tertiary amines
$(iii)$ Ethylamine and aniline
$(iv)$ Aniline and benzylamine
$(v)$ Aniline and $N$-methylaniline.