An alkene $X$ on ozonolysis gives a mixture of $Propan-2-one$ and $methanal$. What is $X$?

Which of the compounds with molecular formula $C_5H_{10}$ yields acetone on ozonolysis?

Which of the following is Baeyer's reagent?

$17 \, mg$ of a hydrocarbon ($M$.$F$. $C_{10}H_{16}$) takes up $8.40 \, mL$ of $H_2$ gas measured at $0^{\circ}C$ and $760 \, mm$ of $Hg$. Ozonolysis of the same hydrocarbon yields acetone,formaldehyde,and a compound with the structure $CH_3-CO-CH_2-CH_2-CHO$. The number of double bonds present in the hydrocarbon is $...........$.

Which of the following is the major product in the following reaction?

An alkene gives two moles of $HCHO$,one mole of $CO_2$,and one mole of $CH_3COCHO$ on ozonolysis. What is its structure?