41. Which of the following is the correct formula for the alkane that contains ten carbon atoms?
(A) C₁₀H₂₂
(B) C₁₀H₂₀
(C) C₁₀H₁₈
(D) C₁₀H₁₀

42. Which of the following is the correct formula for the simplest alkene that contains five carbon atoms? (A) C5H10 (B) C5H8 (C) C5H6 (D) C5H12

43. Name the following molecule.(A) 7-t-butyl-2,2,3,5-tetramethyl-7-propyldecane(B) 6-propyl-2,6-di-t-butylnonane(C) 2,2,5,7,8,8-hexamethyl-3,3-dipropylnonane(D) isonanane

44. A student gave a molecule the following name:2-ethyl-3-methyl-5-isopropylhexaneHowever, her TA pointed out that although the molecule could be drawn correctlyfrom this name, the name violates the systematic rules. What is the correct(systematic) name of the molecule?(A) 3,4-dimethyl-6-isopropylheptane (B) 2-isopropyl-4,5-dimethylheptane(C) 3,4,6,7-tetramethyloctane (D) 2,3,5,6-tetramethyloctane

45. In a lecture, a professor named a molecule 2-ethyl-4-tertiary-butylpentane. A student pointed out that although the correct structure could be drawn from this name, the name did not follow systematic rules. Which of the following is the correct systematic name for the molecule? (A) 2-t-butyl-5-methylhexane (B) 2-ethyl-4,5,5-trimethylhexane (C) 3,5,6,6-tetramethylheptane (D) 2,2,3,5-tetramethylheptane

46. The general name given to hydrocarbons with triple bonds is(A) alkenes (B) alkynes (C) alkanes (D) unsaturated hydrocarbons

47. Name the following molecule.(A) 1-hexyne (B) 2-ethynyl butane(C) 2-ethyl-3-butyne (D) 3-methyl-1-pentyne

48. Which of the following is the alternative name for 1,3-dichorobenzene(A) m-dichlorobenzene (B) o-dichlorobenzene(C) p-dichlorobenzene (D) benzene dichoride

49. In the three-dimensional structure of methane, CH4, the hydrogen atomsattached to a carbon atom are aligned(A) in a straight line. (B) at the corners of a square.(C) at the corners of a tetrahedron. (D) at the corners of a rectangle.

50. Generally, a solution of an organic compound in water will be electrically(A) highly conductive. (B) highly ionized. (C) nonconductive. (D) insulated.

51. VSEPR theory predicts that simple carbon compounds will form bonds that are(A) as far apart as possible. (B) as close together as possible.(C) arranged in a straight line. (D) pointed to the corners of a cube.

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