Q. Ozonolysis of an organic compounds gives formaldehyde as one of the products. This confirms the presence of
A) Two ethylenic double bonds
B) A vinyl group
C) An $iso$-propyl group
D) An acetylenic triple bond
Explanation
(b)
Alkenes give carbonyl compounds on ozonolysis
$Alkene\overset{\frac{O_{3}}{Zn/H_{2}O}}{\rightarrow}HCHO +$ other carbonyl compound
$(A)$
[image:13_image207.emf]
To determine alkene, place carbonyl compounds with their O-atom face to face. Replace O-atom by a double bond
[image:13_image208.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.