An organic compound $\mathrm{A}\left(\mathrm{C}_{5} \mathrm{H}_{\mathrm{8}}ight)$ on hydrogenation gives…
An organic compound $\mathrm{A}\left(\mathrm{C}_{5} \mathrm{H}_{\mathrm{8}}ight)$ on hydrogenation gives compound $\mathrm{B}\left(\mathrm{C}_{\mathrm{5}} \mathrm{H}_{12}ight.$ ). Compound $\mathrm{A}$ on reductive ozonolysis give methanal and 2-ketopropanal. The compound $(A)$ is