known antihistaminic drug also contains tertiary amino group.

Write the IUPAC names of the following compounds,

.

Write the IUPAC names of the following compounds: ${\mathrm{C}}_6{\mathrm{H}}_5-\mathrm{N}{\left({\mathrm{CH}}_3\right)}_2$.

Give the IUPAC name of ${\left({\mathrm{CH}}_3\right)}_2\mathrm{N}-{\mathrm{C}}_2{\mathrm{H}}_5$.

Write the IUPAC name of 

A secondary amine is a/an _______.

Which of the following statements is true?

$1$) Tertiary amines react with acid chlorides.
$2$) $\mathrm{N}-$ethyl benzene sulphonamide is soluble in alkali.
$3$) $\mathrm{N}, \mathrm{N}-$diethyl benzene sulphonamide is soluble in alkali.
$4$) Tertiary amines react with Hinsberg's reagent.