An aerosol is best defined as
a. a drug in liquid form.
b. vapor suspended in a carrier gas.
c. a suspension of solid or liquid particles in a carrier gas.
d. an invisible drug particle.
ANS: C
Drugs in liquid form may be administered in ways other than aerosol (e.g., intravenous [IV] route). By definition, an aerosol may be either solid or liquid particles suspended in a carrier gas, not just a vapor. It is possible to see aerosols, depending on the size of the particles.
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