Answer 1

\[\ce{\underset{\text{Propene}}{CH3 - CH}= CH2 + HBr->[Peroxide]\underset{\text{1-Bromopropane}}{CH3 - CH2 - CH2Br}+ \underset{\text{Silver nitrite}}{Ag - O - N = O}-> \underset{\text{1-Nitropropane}}{CH3 - CH2 -}CH2NO2 + AgBr↓}\]