Answer 1

\[\begin{array}{cc}
\ce{CH3 - CH = CH2 ->[Red P/Br2][(Bromination)] 3CH3 - CH - CH3 + H3PO3 ->[Ag2O/H2O]3CH3 - CH - CH3}\\
|\phantom{...............................}|\phantom{.......................................}|\\
\ce{\phantom{....................................}\underset{\text{2-Hydroxypropane}}{OH}}
\ce{\phantom{...................}\underset{\text{2-Bromopropane(A)}}{Br}\phantom{}}
\ce{\phantom{..........................}\underset{\text{Propan-2-ol(B)}}{OH}\phantom{.......................................}}
\end{array}\]