Haloalkanes and Haloarenes Part 1

Given, 448 mL of A gives 1.53 g of vapours.
∴22400‌mL of A gives =

1.53

445

×22400=76.50g of A
∴ Molecular mass is 76.5
∴ The possible compound is CH3−CH=CH−Cl
On ozonolysis followed by hydrolysis, it gives aldehyde as follows. The compound ( A)‌CH3−CH=CH−Cl (chloropropene) has 3 carbon atoms.