試題詳解

50.A compound having a molecular formula of C₂₀H₃₆ is inert to catalytic hydrogenation. Which of the following statements is true?
(A)The substance has at least one double bond and two rings.
(B)The substance is acyclic (i.e., no rings are present)
(C)The substance has two rings.
(D)The substance has three rings.
(E)None of these.