JEE Main · 7 January 2020, Shift 1 · Q40

The increasing order of pK_b for the following compounds will be: NH_2- CH = NH, (B) CH_3 NHCH_3

The increasing order of $\displaystyle \mathrm{pK}_{\mathrm{b}}$ for the following compounds will be :

$$\mathrm{NH}_2-\mathrm{CH}=\mathrm{NH},

$$(A)

(B)

$\displaystyle \mathrm{CH}_3 \mathrm{NHCH}_3$