Amines Test - 5...

Arrange the following in the decreasing order of basic character.
I. p-toluidine
II. N, N-dimethyl-p-toluidine
III. p-nitroaniline
IV. Aniline

Amines behave as:

Which of the following are P and S in the series of reactions?

The correct order of basic strength of the following are:

How many $$\pi$$ electrons are present in the above conjugation compound?

Which one of the following is least basic in character? (Compare basicity at N-H position).

$$C{ H }_{ 3 }Br+KCN\left( alc. \right) \longrightarrow X\xrightarrow [ \quad Na+{ C }_{ 2 }{ H }_{ 5 }OH\quad  ]{ \quad Reduction\quad  } Y$$
What is $$Y$$ in the series?

The increasing order of reactivity of these diazonium ions in azo-coupling reaction (under similar conditions) will be:

$$CH_3CH_2Cl \xrightarrow {NaCN}X \xrightarrow{Ni/H_2}Y \xrightarrow{acetic\, anhydride}Z$$ 

Among the following amines, which one has the highest $$pK_{b}$$ value in aqueous solution?