question_answer

Three products are obtained by the ozonolysis of penta-1, 3-diene. Out of these if two products are formaldehyde and acetaldehyde, the name of the third one is

A)  formaldehyde  

B)  ethanal

C)  glyoxal        

D)  propanaldehyde

Correct Answer: C

Solution :

 \[C{{H}_{2}}=CH-CH=CH-C{{H}_{3}}\xrightarrow[{}]{{{O}_{3}}}\] \[\xrightarrow[{}]{Zn/{{H}_{2}}O}\underset{formaldehyde}{\mathop{HCHO}}\,+\underset{glyoxal}{\mathop{\underset{\begin{smallmatrix}  | \\  CHO \end{smallmatrix}}{\mathop{CHO}}\,}}\,+\underset{acetaldehyde}{\mathop{C{{H}_{3}}CHO}}\,\]