MCQ
On reductive ozonolysis yields


- ✓$6-$oxoheptanal
- B$6-$oxoheptanoic acid
- C$6-$hydroxyheptanal
- D$3-$hydroxypentanal


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$(1)$ $\begin{matrix}
O \\
|| \\
{{C}_{6}}{{H}_{5}}-C-{{C}_{6}}{{H}_{5}} \\
\end{matrix}$
$(2)$ $C _{6} H _{5}- CHO$
$(3)$ $p - CH _{3}- C _{6} H _{4}- CHO$
$(4)$ $p - CH _{3} O - C _{6} H _{4}- CHO$
Major product