A) It has no stereocenters.
B) It cannot be superimposed on its mirror image.
C) It has no optical rotation.
D) It has a linear structure.

A) An atom that is bonded to two groups.
B) An atom that is bonded to three different groups.
C) An atom that is bonded to four different groups.
D) An atom that is bonded to four identical groups.

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

A) Ultraviolet light.
B) Plane-polarized light.
C) Infrared light.
D) Visible light.

A) By checking the molecular weight of a compound.
B) By analyzing the color of the substance.
C) By counting the number of carbons in a molecule.
D) By measuring optical activity with a polarimeter.

A) A mixture of diastereomers.
B) A mixture of structurally different molecules.
C) A mixture of meso compounds.
D) A 50:50 mixture of two enantiomers.

A) They have no medicinal value.
B) They are easier to synthesize.
C) They can have different biological effects.
D) They have the same properties in the body.

A) A compound with high molecular weight.
B) A compound that rotates the plane of polarized light.
C) A compound that absorbs light.
D) A compound with no stereocenters.

A) Diastereomers have identical boiling points.
B) Enantiomers have identical physical properties except for optical activity.
C) Racemic mixtures have higher melting points than pure enantiomers.
D) Chiral molecules are always more soluble than achiral molecules.