MODULE 5 DDS PINK PACOP 201 - 300

This is a percolation method that can be modified for fluidextracts that must be assayed.

• a. Process A
• b. Process B
• c. Process D
• d. Process E
• e. Process C

It is the taking up of a certain amount of liquid without a measurable increase in size.

• a. Syneresis
• b. Swelling
• c. imbibition
• d. Thixotrophy
• e. Xerogelation

Xerogels are formed when the liquid is removed from a gel and only the framework remains. Examples of these are:

I. gelatin sheets

II. tragacanth ribbons

III. Acacia tears

• a. I only

• b. II only

• c. II & III

• d. I & II

• e. I, II, III

A classification of gels which would include ingredients that are dispersible as colloidal or soluble in water is called hydrogels. Example of hydrogels includes:

I. Carbowax bases

II. Bentonite

III. Silica

• a. I only

• b. II only

• c. II & III

• d. I & II

• e. I, II, III

Magnesium aluminum silicate, also known as Veegum, in concentrations of _______, form firm, thixotropic gels.

• a. 10%
• b. 5%
• c. 2%
• d. 1%
• e. 0.5%

In the preparation of gels, the following statement/s hold/s true:<br /><br />I. Inorganic salts would cause gelation to occur at higher concentrations. <br />II. Alcohol may cause precipitation or gelation <br />III. Higher concentration and higher molecular weights of polymers would produce stronger gels.

• a. I only
• b. II only
• c. II & III
• d. I & II
• e. I, II, III

Bentonite magma is a preparation of ____ bentonite, a native, colloidal hydrated aluminum silicate, in purified water.

• a. 10%
• b. 2%
• c. 5%
• d. 1%
• e. 0.5%

Aluminum hydroxide gel is an aqueous suspension of a gelatinous precipitate composed of insoluble aluminum hydroxide and the hydrated aluminum oxide, equivalent to about ____of aluminum oxide.

• a. 1%
• b. 2%
• c. 5%
• d. 4%
• e. 3%

Milk of Magnesia, USP is a preparation containing between 7 and 8.5 % of magnesium hydroxide. The following statement/s hold/s true regarding its preparation: <br /><br />I. 0.1% citric acid may be added <br />II. Flavoring oils should exceed 0.05% concentration but not more than 2% to enhance the palatability of the preparation. <br />III. The preparation should be stored in tight containers preferably at temperature above and freezing and below 35◦C

• a. I only
• b. II only
• c. II & III
• d. I & III
• e. I, II, III

Gels are defined as semi-solid systems consisting of dispersions made up of either small inorganic particles or large organic molecules enclosing and interpenetrated by a liquid. Other feature/s of these preparations include/s: <br /><br />I. Some gels are clear as water in appearance while others are turbid.<br />II. Gels are considered as colloidal dispersions <br />III. Carbowaxes are gels

• a. I only
• b. II only
• c. II & III
• d. I & III
• e. I, II, III