30. How many absorptions will the following compound have in its carbon NMR spectrum?

(A) 3
(B) 4
(C) 5
(D) 6
(E) 7

26. A chain reaction is one that : (A) involves a series of steps (B) involves two steps with similar energies of activation (C) is initiated by heat (D) requires the addition of an external terminating agent (E) involves a reaction in which the propagation steps also produce the product and initiator necessary for another propagation cycle

27. Which statement best describes 1,3-butadiene? (A) 1,3-butadiene is less stable than 1,4-pentadiene due to steric crowding. (B) 1,3-butadiene is more stable than 1,4-pentadiene because of less steric crowding. (C) 1,3-butadiene is less stable than two molecules of 1-butene. (D) 1,3-butadiene is more stable than 1,4-pentadiene due to resonance energy. (E) 1,3-butadiene’s carbon atoms are sp3 hybridized.

28. Which is the general formula for cyclic hydrocarbons with one double covalent bond between adjacent atoms? (A) CnH2n+2 (B) CnH2n (C) CnH2n-2 (D) CnH2n-4 (E) CnH2n-6

29. What is the major product of the following reaction? (A) (S) 2-butanol (B) (R)2-butanol (C) racemic mixture of 2-butanol (D) e.e of (S)-butanol (E) diastereomeric mixture of 2-butanol

31. The pinacol rearrangement proceeds via              intermediate. (A) carbanion (B) carbocation (C) radical (D) lone pair (E) neutral

32. Rank the following compounds with respect to increasing acidity (least acidic to most acidic). (A) 3＜1＜2＜5＜5 (B) 4＜3＜1＜2＜5 (C) 4＜3＜1＜2＜5 (D) 5＜2＜1＜3＜4 (E) 4＜5＜2＜1＜3

33. What is the product of the following reaction: (A) (B) (C) (D) All of the above (E) Pentane

34. What is the stereochemistry of the following compound: (A) R-form (B) S-form (C) not chiral (D) meso compound (E) racemic mixture

35. What is the name of the compound whose line drawing is shown below?  (A) 3-ethyl-4-methyl-2-hexanol (B) 4-ethyl-3-methyl-5-hexanol (C) 3,4-diethyl-2-pentanol (D) 2,3-diethyl-4-pentanol (E) 3-iso-buty1-2-pentanol

36. Which of the following statements is correct? (A) Alkenes have only sp2 hybridised carbon atoms. (B) Alkenes will react with ozone to give carbonyl compounds. (C) Amines can react with carboxylic acids to give esters. (D) Tertiary alcohols will oxidise to ketones. (E) Bromobenzene will undergo an SN2 substitution reaction