未分類

39.請問下列何者能夠將2-環已烯-1-酮(1-cyclohex-2-enone)還原成環己醇(cyclohexanol)?(A) H2/Pt (B) NaBH4/CH3OH (C) NaBH4/H2

40. 以下列化合物進行電子吸收光譜實驗，請問其結果何者具有最長波長之吸收帶(absorption band) ?(A) (B) (C) (D)

41. 1,3-環已二烯4個分子軌域的能量由低至高排序為：π1，π2，π3，π4。請問下列軌域何者為其最低未佔用分子軌域(LUMO)?(A)π1 (B)π2 (C)π3 (D)π4

42. 請問下列化學反應的產物為何? (A) (B) (C) (D)

43. 請問下列化學反應所需的試劑濃何? (A) CH3-(CO)-OOH (B) CH3-CO-OH (C) CH3-OH (D) Na2O

44. 請問下列化學反應的產物為何? (A) (B) (C) (D)

45. 已知林德拉催化劑(Lindlar‘s catalyst)能夠將氫氣與炔(alkyne)反應成烯(alkene)，請問下列何者是林德拉催化劑的金屬成分?(A) Pt (B) Au (C) Pd

46.請問下列有機化合物何者不具芳香性?(A) (B) (C) (D)

47. 請問下列何者是製備阿斯匹靈 (aspirin)的最佳反應條件? (A) I (B) II (C) lll (D) IV

48.依照下列脂肪酸的熔點由低到高進行排序，請問何者正确? (A) I ＜ II ＜ III ＜ IV (B)IV ＜ lII ＜ ll ＜ l (C)ll ＜ IV ＜ lII ＜ I (D)IV

49.依照下列化合物的鹼性(basicity)強度由小到大進行排序，請問何者正確? (A) IV ＜ II ＜ I ＜ lll (B) III ＜ll ＜ lV ＜ l (C) III ＜ I ＜ H

50.請問下列何者的應產物具有光學活性?(A) (B) (C) (D)

1.How many distinct p orbitals exist in the second electron shell, where n = 2? (A)2 (B)3 (C)4(D)5

2.Orbitals which are equal in energy are referred to as ________. (A)degenerate (B)polar (C) nodes(D

3.The atomic number of boron is 5. The correct electronic configuration of boron is: (A)1s22s3 (B)1s

4.Which of the following molecules contains a polar covalent bond? (A)H2 (B)F2 (C) CH3Cl(D)NaCl

5.Which of the following are acceptable Lewis structures, including formal charges, for nitric acid,

6.Which atomic orbital combination would result in a molecular sigma bond? (A)(B)(C)(D)

7.How many carbon-carbon σ bonds are present in the molecule shown?(A)2 (B)3 (C) 4(D)5

8.How many π bonds are present in the molecule shown?(A)0 (B)1 (C) 3(D)4

9.Vildagliptin is a recently released antidiabetic drug (J. Med. Chem. 2010, 7902). How many element

10. In the structure below, the hybridization of the oxygen is ________ and the C-O-C bond angle is

11. The structure below is a potent analgesic agent (pain reliever) (J. Med. Chem., 2009, 5685). How

12. How many methylene groups are present in 2,4-dimethylhexane? (A)0 (B)1 (C) 2(D)6

13. Among the butane conformers, which occur at energy minima on a graph of potential energy versus

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