A) 1-butene
B) 2-butene
C) iso-butene
D) 2-butyne
Correct Answer: C
Solution :
Acetone is obtained by the ozonolysis of iso-butene, while 1-butene and 2-butene on ozonolysis give aldehyde and 2-butyne gives diketone. \[\underset{iso-\text{butene}}{\mathop{C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}}}\,\xrightarrow[Zn/{{H}_{2}}{{O}_{2}}]{{{O}_{3}}}\underset{\text{acetone}}{\mathop{C{{H}_{3}}-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=O}}\,\] \[\underset{\text{formaldehyde}}{\mathop{+HCHO}}\,\]
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