Filters
Question type

Study Flashcards

Chiral molecules that have nonsuperimposable mirror images are called:


A) enantiomers
B) diastereomers
C) meso compounds
D) stereogenic
E) symmetrical

F) A) and B)
G) All of the above

Correct Answer

verifed

verified

How many stereogenic centers are present in the following molecule? How many stereogenic centers are present in the following molecule?   A)  1 B)  2 C)  4 D)  6 E)  8


A) 1
B) 2
C) 4
D) 6
E) 8

F) C) and D)
G) None of the above

Correct Answer

verifed

verified

The terms that best describe the relationship between (2R,3S) -2-bromo-3-chlorobutane and (2S,3R) -2-bromo-3-chlorobutane are


A) configurational, achiral, diastereomers.
B) conformational, chiral, diastereomers.
C) configurational, chiral, enantiomers.
D) conformational, chiral, enantiomers.
E) configurational, chiral, diastereomers.

F) A) and E)
G) D) and E)

Correct Answer

verifed

verified

Which of the following molecules has a mirror plane of symmetry? Which of the following molecules has a mirror plane of symmetry?   A)  1 B)  2 C)  3 D)  4 E)  all of them


A) 1
B) 2
C) 3
D) 4
E) all of them

F) A) and E)
G) A) and B)

Correct Answer

verifed

verified

Which of the following are achiral conformers?


A) staggered and eclipsed forms of ethane
B) cis and trans-2-butene
C) meso and (2R,3R) -2,3-dibromobutane
D) (R) and (S) -lactic acid

E) A) and C)
F) A) and D)

Correct Answer

verifed

verified

Which of the following objects is chiral?


A) egg
B) pencil
C) cross country skis
D) paperclip
E) shoes

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

Which of the following statements about the pair of molecules shown below is not true? Which of the following statements about the pair of molecules shown below is not true?   A)  They have the same boiling point. B)  One rotates plane polarized light in the opposite direction from the other. C)  They have the same density. D)  One rotates plane polarized light a different number of degrees than the other. E)  They are mirror images of each other.


A) They have the same boiling point.
B) One rotates plane polarized light in the opposite direction from the other.
C) They have the same density.
D) One rotates plane polarized light a different number of degrees than the other.
E) They are mirror images of each other.

F) All of the above
G) B) and E)

Correct Answer

verifed

verified

The observed rotation for 100 mL of an aqueous solution containing 1 g of sucrose, placed in a 2-decimeter sample tube, is +1.33° at 25°C.What is the specific rotation of sucrose?


A) +66.5°
B) +266°
C) +41.5
D) +133°
E) 108°

F) A) and C)
G) A) and B)

Correct Answer

verifed

verified

The product of addition of bromine to (R) -3-buten-2-ol will be


A) a 50:50 mixture of enantiomers.
B) a mixture of enantiomers formed in unequal amounts.
C) a 50:50 mixture of diastereomers.
D) a mixture of diastereomers formed in unequal amounts.
E) optically inactive.

F) B) and C)
G) C) and D)

Correct Answer

verifed

verified

Which of the following molecules are the same? Which of the following molecules are the same?   A)  1 and 2 B)  3 and 4 C)  1 and 3 D)  2 and 3 E)  2 and 4


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

F) B) and D)
G) C) and E)

Correct Answer

verifed

verified

How many stereoisomers can be obtained from the monobromination of pentane?


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

F) C) and E)
G) None of the above

Correct Answer

verifed

verified

Showing 41 - 51 of 51

Related Exams

Show Answer