What is the product formed when ethylamine is oxidized with acidic $KMnO_4$?

The order of basicity among the following compounds is:

The final product of the given sequence is :

Which of the following compounds is obtained when acetamide is warmed with bromine and excess conc. $KOH_{(aq)}$ solution?

In the following reaction sequence,$C_2H_5NH_2$ $\xrightarrow{HNO_2} A$ $\xrightarrow{PCl_5} B$ $\xrightarrow{NH_3} C$,the compound '$C$' is

In the following reaction,the major product $(P)$ formed is