Which test is used to identify a primary amino group in a given organic compound?

$p$-toluenesulphonyl chloride is known as Hinsberg's reagent. Which of the following statements is $NOT$ correct for it?

An organic compound '$X$' showing the following solubility profile is:
'$X$' $\xrightarrow{\text{water}}$ Insoluble
'$X$' $\xrightarrow{5\% \,HCl}$ Insoluble
'$X$' $\xrightarrow{10\% \,NaOH}$ Insoluble
'$X$' $\xrightarrow{10\% \,NaHCO_3}$ Insoluble

The reagent used for the distinction of $1^{\circ}$,$2^{\circ}$ and $3^{\circ}$ amines is

Which of the following does not reduce Tollen’s reagent?

$A$ solution of $NaNO_3$,when treated with a mixture of $Zn$ dust and '$A$' yields ammonia. '$A$' can be