Chapter 9 Multiple-choice questions

. What is the name of this compound?

3-ethylheptane

5-ethylheptane

3-butylpentane

5-butylpentane

. What is the name of this compound?

Hexan-5-ol

Hexanoic acid

Hexanal

Hexan-2-ol

. Which of these formulae correctly represents but-1-ene?

. What is the name of this compound?

Pentan-2-ol

Petane 2,5-diol

Pentane 1,4-diol

Pentane 2,5-ol

. A compound can exist as a maximum of two structural isomers. True or false?

True

False

. Structural isomers may come from different families of organic compound. True or false?

True

False

. Here are two cis/trans isomers of pent-2-ene. Which is the cis isomer?

1

2

. Cis-trans isomerism only occurs in compounds possessing double bonds. True or false?

True

False

. Which of the following compounds is not chiral?

1

2

3

4

. Which of the following notations is not used to distinguish between pairs of enantiomers?

R and S

E and Z

+ and -

D and L

. All twenty of the amino acids found in proteins are chiral. True or false?

True

False

. The molecules depicted here are keto-enol tautomers. But which one is the enol form?

1

2

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