Products that are formed in the given reaction including by-products are: $CH_3CH_2CH_2CH_2CONH_2 + Br_2 + 4 NaOH \rightarrow$

The product formed from the following reaction sequence is?

The basicity of aniline is weaker in comparison to that of methylamine due to

Given below are two statements:
Statement $I$: Primary aliphatic amines react with $HNO_2$ to give unstable diazonium salts.
Statement $II$: Primary aromatic amines react with $HNO_2$ to form diazonium salts which are stable even above $300 \ K$.
In the light of the above statements,choose the most appropriate answer from the options given below:

The order of boiling points of the following compounds is:
$1$. $(CH_3)_3N$
$2$. $CH_3CH_2CH_2NH_2$
$3$. $CH_3CH_2NHCH_3$

Consider the following reactions and identify the correct reaction.