Understanding pharmaceutical dosage forms is a fundamental aspect of pharmaceutics and a core competency for B.Pharm students. The design of a dosage form impacts a drug’s stability, therapeutic effectiveness, and patient compliance. This quiz covers the classification, definitions, and key characteristics of various solid, liquid, and semi-solid dosage forms, providing a thorough review of this essential subject.
- Which of the following is an example of a biphasic liquid dosage form?
- Syrup
- Elixir
- Suspension
- Gargle
- Powders that absorb moisture from the atmosphere are described as:
- Effervescent
- Efflorescent
- Hygroscopic
- Eutectic
- Syrups are concentrated aqueous preparations of a sugar or sugar substitute, with or without:
- Alcohol
- Flavoring agents and medicinal substances
- Oil
- A suspending agent
- Which test is used to identify the type of an emulsion (o/w or w/o)?
- Viscosity test
- Dilution test
- Sedimentation test
- Clarity test
- Suppositories are solid dosage forms intended for insertion into:
- The oral cavity
- Body orifices
- The bloodstream
- The skin
- A suspension in which particles exist as separate entities is known as:
- A flocculated suspension
- A deflocculated suspension
- An emulsion
- A solution
- Clear, sweetened hydroalcoholic solutions intended for oral use are called:
- Syrups
- Suspensions
- Liniments
- Elixirs
- Which of the following is classified as a semi-solid dosage form?
- Lotion
- Elixir
- Ointment
- Powder
- A mixture of solid substances that liquefies when mixed together is a(n):
- Hygroscopic mixture
- Efflorescent mixture
- Eutectic mixture
- Effervescent mixture
- What is the primary role of an emulsifying agent?
- To increase the viscosity of the preparation
- To prevent the growth of microorganisms
- To stabilize the dispersed droplets in an emulsion
- To provide a sweet taste
- Liniments are liquid preparations intended for application to the skin with:
- Swallowing
- Rubbing or friction
- No rubbing
- A sterile dressing
- Gargles are aqueous solutions used to treat infections of the:
- Nose
- Ear
- Throat
- Stomach
- Pastes are semi-solid preparations that differ from ointments by containing a higher percentage of:
- Water
- Oil
- Insoluble solids
- Emulsifying agent
- In a flocculated suspension, the rate of sedimentation is:
- Slow
- High
- Zero
- Variable
- What is the main advantage of liquid dosage forms?
- They are more stable than solid forms.
- They have a longer shelf-life.
- They allow for flexible dosing and are easier to swallow.
- They have no taste.
- Powders containing crystalline water which is liberated on exposure to a low humidity environment are:
- Hygroscopic
- Efflorescent
- Deliquescent
- Eutectic
- Which of the following is a monophasic liquid dosage form?
- Emulsion
- Suspension
- Magma
- Ear drops
- The displacement value is a calculation used in the preparation of:
- Tablets
- Capsules
- Suppositories
- Syrups
- Creams are semi-solid emulsions of either the oil-in-water (o/w) or water-in-oil (w/o) type. Which type is more easily washed off with water?
- Water-in-oil (w/o)
- Oil-in-water (o/w)
- Both are equally washable
- Neither is washable with water
- Aqueous solutions instilled into the nasal passage are known as:
- Ear drops
- Enemas
- Nasal drops
- Throat paints
- The primary disadvantage of powder as a dosage form is:
- Slower onset of action
- Inaccuracy of dose for bulk powders
- Difficulty in swallowing
- High stability
- The stability problem where dispersed droplets merge to form larger droplets in an emulsion is called:
- Creaming
- Sedimentation
- Coalescence
- Flocculation
- Which of the following is NOT a type of suppository base?
- Oleaginous (fatty) bases
- Water-soluble bases
- Emulsifying bases
- Suspending bases
- A solid mass of ingredients granulated to release gas when it comes into contact with water is a(n) ______ powder.
- dusting
- hygroscopic
- effervescent
- compound
- Lotions are typically applied to the skin:
- With friction
- Without friction
- Only on broken skin
- By injection
- Which of the following is a biphasic system?
- Glycerites
- Spirits
- Emulsions
- Elixirs
- Gels are semi-solid systems in which a liquid phase is constrained within a:
- Dispersed solid phase
- Three-dimensional polymeric matrix
- Fatty base
- Soluble sugar
- An enema is a liquid preparation intended for administration into the:
- Ear
- Nose
- Rectum
- Mouth
- The formation of a hard, non-resuspendable sediment in a suspension is known as:
- Flocculation
- Creaming
- Caking
- Coalescence
- Which is a key difference between syrups and elixirs?
- Syrups are aqueous, while elixirs are hydroalcoholic.
- Syrups are less sweet than elixirs.
- Syrups are always colorless.
- Elixirs are more viscous than syrups.
- Dusting powders are used for:
- Internal administration
- External application to the skin
- Making solutions
- Effervescent reactions
- The HLB (Hydrophile-Lipophile Balance) system is used to classify:
- Suspending agents
- Sweeteners
- Coloring agents
- Emulsifying agents
- Viscous liquid preparations applied to the pharynx or other parts of the throat are:
- Mouthwashes
- Gargles
- Throat paints
- Liniments
- The upward movement of dispersed droplets in an emulsion is termed:
- Sedimentation
- Creaming
- Breaking
- Phase inversion
- Theobroma oil (Cocoa butter) is a common example of what type of suppository base?
- Water-soluble
- Glycerinated gelatin
- Oleaginous (fatty)
- Polyethylene glycol
- The process of uniformly distributing a small amount of a potent substance with a large amount of an inert diluent is called:
- Trituration
- Levigation
- Geometric dilution
- Sifting
- Which dosage form is defined as a system containing at least two immiscible liquid phases, one of which is dispersed as globules in the other?
- Suspension
- Solution
- Emulsion
- Gel
- Ointments are typically used as:
- Emollients and protective barriers
- Sweetening agents
- Solvents for injections
- Oral medications
- Which of the following is an example of a solid dosage form?
- Cream
- Lotion
- Powder
- Elixir
- A suspension with a clear supernatant and a loosely packed sediment is likely:
- Caked
- Flocculated
- Deflocculated
- An emulsion
- Mouthwashes are used for:
- Treating deep throat infections
- Deodorizing and cleaning the oral cavity
- Systemic drug delivery
- Moisturizing the skin
- The irreversible breakdown of an emulsion, where the dispersed phase separates, is called:
- Creaming
- Flocculation
- Breaking
- Phase inversion
- Glycerogelatin bases are used in the preparation of:
- Ointments
- Pastes
- Suppositories
- Liniments
- Which dosage form consists of a solid drug dispersed in a liquid vehicle?
- Solution
- Elixir
- Suspension
- Syrup
- Excipients are added to dosage forms to:
- Act as the primary therapeutic agent
- Aid in manufacturing and improve stability or performance
- Only to provide color
- Neutralize the active ingredient
4G. The most common method for preparing suppositories is: * Hand rolling * Compression molding * Fusion molding (melt molding) * Solvent evaporation
**Answer:** Fusion molding (melt molding)
- What is the primary vehicle in a syrup?
- Alcohol
- Glycerin
- A concentrated sugar solution
- Propylene glycol
- Compared to suspensions, emulsions are generally:
- More physically stable
- Less physically stable
- Only for external use
- Clear solutions
- Which semi-solid dosage form is stiffest due to its high solid content?
- Cream
- Ointment
- Gel
- Paste
- The classification of dosage forms into solid, liquid, and semi-solid is based on their:
- Route of administration
- Chemical properties
- Physical state
- Therapeutic use
