Which of the following amines would undergo diazotisation?

State True or False for the following statements:
$(i)$ Aniline becomes polar in its resonance structure.
$(ii)$ The separation of charge occurs in the resonance structure of aniline.
$(iii)$ The $NH_2$ group of aniline is electron donating.
$(iv)$ The $NH_2$ group of aniline is electron attracting in resonance $(-R)$.

Identify $Z$ in the above sequence of reactions.

What is formed when ethylamine reacts with chloroform in the presence of alcoholic $KOH$?

Acetamide is

Which of the following statements is true for Benzenediazonium fluoroborate?