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

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

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

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

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

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

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

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

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