問題詳情

4. Dieldrin, C12H8Cl6O, is a pentacyclic compound formerly used as an insecticide. How many double bonds does dieldrinhave?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

參考答案

答案：A
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(1)