question_answer

The number of \[52153\] pi bonds present in \[Alkyne\xrightarrow[Lindlars\,\,catalyst]{{{H}_{2}}}A\xrightarrow{Ozonolysis}\underset{only}{\mathop{B}}\,\]and \[\xleftarrow[\Pr ocess]{Wac\ker }C{{H}_{2}}=C{{H}_{2}}\] molecules, respectively are

A)  3 , 4             

B)  4,2

C)  2,3            

D)  3,2

Correct Answer: A

Solution :

 Structure of \[\underline{X}\] \[\underline{X}\] \[p\pi .d\pi \]pi bonds. Structure of \[Xe{{O}_{3}}\] \[Xe{{O}_{4}}\] \[3:5\] bonds.