${\mathrm{CH}}_3-{\mathrm{CONH}}_2\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{LiAlH}}_4}{\to }}\text{\hspace{0.17em}P};$     ${\mathrm{CH}}_3\mathrm{CON}{\mathrm{H}}_2\stackrel{{\mathrm{Br}}_2+\mathrm{KOH}}{\to }\mathrm{Q};$         P and Q are

${\mathrm{CH}}_3-{\mathrm{CONH}}_2\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{LiAlH}}_4}{\to }}{\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2\left(\mathrm{P}\right)$

${\mathrm{CH}}_3-{\mathrm{CONH}}_2+{\mathrm{Br}}_2+4\mathrm{KOH}\to {\mathrm{CH}}_3{\mathrm{NH}}_2\left(\mathrm{Q}\right)+{\mathrm{K}}_2{\mathrm{CO}}_3+2\mathrm{KBr}+2{\mathrm{H}}_2\mathrm{O}$

 P and Q are homologues