1. Which types of compounds are saturated hydrocarbons?
A) Alkenes
B) Aromatic hydrocarbons
C) Alkanes
D) Alkynes
E) All of the hydrocarbons above are unsaturated hydrocarbons.
Ans: C Difficulty: Easy
2. Which is the molecular formula of an alkyne?
A) C10H18 B) C9H18 C) C8H18 D) C10H20
Ans: A Difficulty: Easy
44. Fats are solids at room temperature and are generally formed from fatty acids having a large number of double bonds in their carbon chains.
A) True B) False
Ans: B Difficulty: Medium
45. The double bonds in naturally occurring fatty acids are typically trans.
A) True B) False
Ans: B Difficulty: Easy
46. Essential fatty acids cannot be synthesized by the human body and therefore must be obtained in the diet.
A) True B) False
Ans: A Difficulty: Easy
47. When 4,4-dimethyl-2-pentene adds H2 in the presence of a metal catalyst, the product is 4,4-dimethylpentane.
A) True B) False
Ans: B Difficulty: Medium
48. When an alkene undergoes an addition reaction, new atoms replace the hydrogen atoms on the carbons that are part of the double bond.
A) True B) False
Ans: B Difficulty: Easy
49. The addition of water to an alkene is called a hydrogenation reaction.
A) True B) False
Ans: B Difficulty: Easy
50. When an oil is partially hydrogenated, all of the double bonds react with H2, giving a product that has a higher melting point.
A) True B) False
Ans: B Difficulty: Easy
51. Partial hydrogenation of soybean oil has the effect of decreasing the number of carbon-carbon double bonds in the oil.
A) True B) False
Ans: A Difficulty: Medium
52. Saturated oils are more susceptible than unsaturated fats to oxidation, giving them a longer shelf life.
A) True B) False
Ans: B Difficulty: Medium
53. Saturated and unsaturated fatty acids have a similar 3-D shape.
A) True B) False
Ans: B Difficulty: Easy
54. An organic compound is classified as aromatic if it is cyclic and has a fragrant odor.
A) True B) False
Ans: B Difficulty: Easy
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