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 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) 3
B) 2
C) 1
D) 4

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

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

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

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

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

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