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15 Cards in this Set
- Front
- Back
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Which of the following statements is false?
A) Ointments are semisolid preparations. B) Ointments may be medicated or not C) Ointment bases may be used for their physical effects D) Ointments are designed to deliver the drug through the skin |
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Petrolatum is
A) an absorption base B) a water removable base C) a water soluble base D) a hydrocarbon base |
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Which of the following statements about Lanolin is not correct?
Lanolin A) is an absorption base B) is a purified waxlike substance C) is obtained from sheep-wool D) contains not more than 0.25% water E) has the capacity to absorb up to100 times its weight in water |
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Which of the following statements are correct?
A) Polyethylene glycol (PEG) is a polymer of ethylene oxide and water B) The NF lists the viscosity of PEGs ranging from average molecular weight of 200 to 8000 C) PEGs having an average molecular weight above 1000 are clear liquids D) PEGs an average molecular weight below 600 are waxlike materials E) The lower the molecular weight, the greater the viscosity F) All of them G) A and B H) A, B, E I) Only B |
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Which one of the ingredients below is the emulsifying agent in an over the counter antiitch
ointment? A) Stearyl alcohol B) Butylparaben C) Sodium lauryl sulphate D) White wax E) Non of the above is the emulsifying agent |
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Which of the following statements regarding gels is/are false?
A) An inorganic hydrogel is a two-phase system B) An organic gel is a single-phase system C) Hydrogels include ingredients that are soluble in water D) Organogels include animal and vegetable fats E) All of the above F) None of the above |
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Thixotropy is
A) a reversible gel-sol formation with no change in volume B) a gel that has been dehydrated C) is taking up of a liquid by a gel with an increase in volume D) is the contraction of a gel, causing the gel to shrink E) is the taking up of a liquid by a gel without a measurable increase in volume |
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Which of the following statements regarding Cocoa butter is/are false?
A) Cocoa butter melts at 86°-97°F (30° - 36°C) B) Cocoa butter exhibits a marked polymorphism C) the beta form of the crystals is the more stable form D) the alpha form of the crystals is the more stable form E) Cocoa butter must be heated quickly and then chilled quickly F) None of the above G) All of the above H) D, E I) C, E J) A, B, C |
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The most commonly used base for vaginal suppositories consists of
A) combinations of various molecular weight polyethylenglycols B) Fattybase C) Witepsol bases D) Cocoa butter |
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On an industrial scale, which of the following methods for preparing suppositories is/are
used most frequently? A) compression B) hand rolling an shaping C) molding from a melt D) All of the above E) A, C |
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Which of the following statements is not correct?
When preparing suppositories, the density factor A) is used to determine how much of a base will be displaced by a drug B) can experimentally be determined by the double casting technique C) need not to be considered when cocoa butter is used as a base D) is the ratio between the weight of the drug and the weight of base displaced |
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When compounding an ointment containing volatile oils (e.g. lavender oil), it is
recommended to add the volatile oil A) together with all other components B) at the beginning when the temperature of the mixture is still high C) at the end when the product is "cool to the back of the hand D) after the emulsifying agent is added |
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The gelling agent Carbomer is
A) an acrylic acid based polymer B) obtained from seaweed C) obtained from bee-wax D) a mixture of 5% low molecular-weight polyethylene and 95% mineral oil |
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Which of the following statements regarding hydrocarbon bases is correct?
Hydrocarbon bases A) Are soluble in water B) Are water washable C) Will not absorb water D) Are non-occlusive E) Are non-greasy |
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Which type of dosage form is used most frequently in the ear?
A) Solutions. B) Suspensions. C) Ointments. D) Creams. |
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