Top 150+ Solved Pharmaceutical Organic Chemistry 3 MCQ Questions Answer
Q. Which of the following is true of any (S)-enantiomer?
a. It rotates plane-polarized light to the right.
b. It rotates plane-polarized light to the left.
c. It is a racemic form.
d. It is the mirror image of the corresponding (R)-enantiomer.
Q. Enantiomers are:
a. Molecules that have a mirror image.
b. Molecules that have at least one stereogenic center.
c. Non-superposable molecules.
d. Non-superposable molecules that are mirror images of each other.
Q. Which of the following is NOT true of enantiomers? They have the same:
a. Boiling point.
b. Melting point.
c. Specific rotation.
d. Density.
Q. Which statement is true of 1,3-dimethylcyclobutane?.
a. Only one form of the compound is possible.
b. Two diastereomeric forms are possible.
c. Two sets of Enantiomers are possible.
d. Two enantiomeric forms and one meso comp.
Q. What is the molecular formula for the alkenes of smallest molecular weight which possesses astereogenic center?
a. C4H10
b. C5H12
c. C6H14
d. C7H16
Q. Which of the statements below correctly describes an achiral molecule?
a. The molecule has a nonsuperimposable mirror image.
b. The molecule exhibits optical activity when it interacts with plane-polarized light.
c. The molecule has an enantiomer.
d. The molecule might be a meso form.
Q. Which of the following statements correctly pertains to a pair of enantiomers?
a. They rotate the plane of polarized light by exactly the same amount and in opposite directions.
b. They rotate the plane of polarized light by differing amounts and in opposite directions.
c. They rotate the plane of polarized light by differing amounts and in the same direction.
d. They have different melting points.
Q. A mixture of equal amounts of two enantiomers __________.
a. is called a racemic mixture
b. is optically inactive
c. implies that the enantiomers are meso forms
d. both A and B
Q. __________ is the use of an optically active reagent or catalyst to convert an optically inactivestarting material into an optically active product.
a. Asymmetric induction
b. Racemization
c. Optical reduction
d. Meso effection
Q. Which of the following statements is (are) true for the compound (R)-2-butanol?
a. This compound is chiral.
b. This compound is optically active.
c. This compound has an enantiomer.
d. all of the above