Consider the following process:

$A\stackrel{NaN{H}_2}{\to }B\stackrel{A}{\to }C$      
If ‘A’ $\left(C_3{H}_{3}Cl\right)$  is a chloro compound can decolorize Bromine water and on vapourization 1.49g of ‘A’ gives 448ml vapour at S.T.P then