Solution :
When $${O_3}$$ reacts with alkene, it forms ozonide, which on reaction with $$Zn$$ and acid or $${H_2}/Ni$$ gives aldehydes and/or ketones. These products helps in locating the position of a double bond as
Releted MCQ Question on Organic Chemistry >> Hydrocarbons (Alkane, Alkene and Alkyne)