Deck 9: Isomerism: Generating Chemical Variety

Question 1

How many pairs of structural isomers are there here?

A) None
B) One
C) Two
D) Three
E) Four

Answer 1

C

Question 2

Which two of the following compounds are cis-trans isomers?

A)
B)
C)
D)
E)
F)

Answer 2

B,E

Question 3

Which of the following compounds can exist as a pair of enantiomers? Select any that apply.

A)
B)
C)
D)
E)

Answer 3

B,D,E

Question 4

Which of the following molecules is chiral?

A)
B)
C)
D)
E)

Question 5

Which one of the following amino acids cannot exist as a pair of enantiomers?

A) Valine
B) Glycine
C) Alanine
D) Tyrosine
E) Glutamic acid

Question 6

Which of the following statements about isomers are true? Select all that apply.

A) Structural isomers do not share the same physical and chemical properties.
B) Cis-trans isomers share the same physical and chemical properties.
C) Enantiomers show different biological properties.
D) Structural isomers may belong to different families of organic compound.
E) Structural isomers and cis-trans isomers are both types of stereoisomer.

Question 7

Which of the following statements about isomers are false? Select all that apply.

A) Enantiomers belong to a broader family of isomers called stereoisomers.
B) Enantiomers are also called optical isomers.
C) Enantiomers do not share the same physical and chemical properties.
D) Enantiomers are asymmetric.
E) Enzymes cannot distinguish between enantiomers.

Question 8

How many different structural isomers are there here?

A) Two
B) Three
C) Four
D) Five
E) Six

Question 9

What is the name of this compound?

A) Hex-1-ene
B) Hex-2-ene
C) Hex-3-ene
D) Hex-4-ene
E) Hex-5-ene

Question 10

What is the name of this compound?

A) Pentanoic acid
B) Pentanal
C) Pentan-4-one
D) Methyl butanoate
E) Pentan-2-one

Question 11

Which of the following compounds is cis hex-2-ene?

A)
B)
C)
D)
E)
F)

Question 12

Which of the following statements about chirality are true? Select all that apply.

A) A chirality centre is a central atom with three different groups attached
B) A molecule may have more than one chirality centre
C) Chiral molecules lack a plane of symmetry
D) A pair of chiral molecules are superimposable mirror images
E) Most biological molecules are chiral

Question 13

Which of the atoms labelled 1-5 in the following molecule is the chirality centre?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 14

Which of the atoms labelled 1-5 in the following molecule is the chirality centre?

A) 1
B) 2
C) 3
D) 4
E) 5

Question 15

Match the following structural formulae with their correct names.
-Hexan-2-ol

A)
B)
C)
D)
E)

Question 16

Match the following structural formulae with their correct names.
-Heptane 2,4 diol

A)
B)
C)
D)
E)

Question 17

Match the following structural formulae with their correct names.
-Heptan-3-ol

A)
B)
C)
D)
E)

Question 18

Match the following structural formulae with their correct names.
-Hexan-3-ol

A)
B)
C)
D)
E)

Question 19

Match the following structural formulae with their correct names.
-Hexane 2,5 diol

A)
B)
C)
D)
E)

Question 20

What is the name of this compound?

A) 3-ethylheptan-3-ol
B) 4-propylhexan-3-ol
C) 4-propylhexan-4-ol
D) 4-ethylheptan-3-ol
E) 4-ethylheptan-5-ol