The Nessler's reagent contains

Ceric ammonium nitrate and $CHCl_3 / \text{alc. } KOH$ are used for the identification of functional groups present in ...... and ........ respectively.

Which of the following will react with $CHCl_{3} +$ alc. $KOH$?

How can primary amines be distinguished from secondary and tertiary amines?

The test that distinguishes primary amines from other amines is

Given below are two statements:
Statement $I$: All the following compounds react with $p$-toluenesulfonyl chloride:
$C_6H_5NH_2$
$(C_6H_5)_2NH$
$(C_6H_5)_3N$
Statement $II$: Their products in the above reaction are soluble in aqueous $NaOH$.
In the light of the above statements,choose the correct answer from the options given below.