The correct order of decreasing basic strength of the following compounds is:
$(I)$ Aniline
$(II)$ $p$-Methoxyaniline
$(III)$ $p$-Nitroaniline
$(IV)$ $m$-Nitroaniline

Given below are two statements:
Statement $I$: Aniline is less basic than acetamide.
Statement $II$: In aniline,the lone pair of electrons on nitrogen atom is delocalised over benzene ring due to resonance and hence less available to a proton.
Choose the most appropriate option:

Identify the alkene obtained as the major product in the following Hofmann elimination reaction.
$(CH_3CH_2CH_2)N^{+}(CH_2CH_3)_3 I^{-}$ $\xrightarrow[\Delta]{\text{moist } Ag_2O} A$ $\xrightarrow[\Delta]{\text{heat}} \text{Alkene} + \text{Amine}$

When primary amines are treated with $HCl$,the product obtained is

The correct order of increasing basic nature for the bases $NH_{3}$,$CH_{3}NH_{2}$ and $(CH_{3})_{2}NH$ in aqueous solutions is:

Which of the following compounds on boiling with hydrochloric acid forms a ketone?