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What is a primary risk associated with using metal containers?

They are lightweight.

They can absorb active ingredients.

They may explode if heated. (correct)

They are resistant to impact.

What is a potential issue with rubber closures in pharmaceutical use?

They are chemically stable under all conditions.

They can leach components into the solution. (correct)

They enhance the transportation of goods.

They often contain toxic metals.

What is one disadvantage of using rubber in pharmaceutical packaging?

Greater costs compared to plastic.

Loss of effectiveness over time.

Limited applications in modern packaging.

Absorption of the active ingredient. (correct)

Which of the following is considered an advantage of using plastic containers over glass?

Resistance to impact. Signup and view all the answers

Which material is suggested to improve rubber stoppers?

Teflon. Signup and view all the answers

What is an advantage of low and medium density polyethylene in container design?

Versatility in function as squeezable containers. Signup and view all the answers

Which of these factors does NOT contribute to the choice of containers?

Color of the container. Signup and view all the answers

What problem is primarily associated with rubber stoppers in the pharmaceutical field?

Absorption of preservatives. Signup and view all the answers

What characterizes suspensions in terms of their composition?

They are heterogeneous systems with two distinct phases. Signup and view all the answers

Which factor is crucial for the formulation of a good suspension?

Ensuring uniform suspension of insoluble particles. Signup and view all the answers

What is the main role of suspending agents in suspensions?

To increase the viscosity of the external phase. Signup and view all the answers

Which of the following is NOT a common problem encountered when formulating suspensions?

Formation of homogenous solutions. Signup and view all the answers

Which method is typically used for the preparation of suspensions?

Mechanical agitation. Signup and view all the answers

What is the role of a dialysis membrane in the purification process?

To prevent the passage of colloidal particles Signup and view all the answers

What therapeutic benefit does colloidal copper provide?

Effective in treating cancer Signup and view all the answers

Why is coarsely powdered sulfur poorly absorbed when administered orally?

It has a larger particle size than colloidal sulfur Signup and view all the answers

Which of the following macromolecules is commonly used as a plasma substitute?

Hydroxyethyl starch (HES) Signup and view all the answers

What unusual property do certain medicinal colloids, like colloidal silver iodide, possess?

They enhance therapeutic properties when formulated in colloidal state Signup and view all the answers

What is the function of plasma proteins mentioned in the context of drug molecules?

To bind certain drug molecules, affecting pharmacologic activity Signup and view all the answers

Which of the following is NOT considered a colloidal substance according to the content?

Ionic silver salts Signup and view all the answers

What potential side effect does colloidal sulfur have when absorbed in high doses?

Toxic reaction leading to death Signup and view all the answers

What happens to the particles in a stable colloidal dispersion?

They remain dispersed and do not settle. Signup and view all the answers

What does the Tyndall Effect demonstrate in a colloidal dispersion?

Light is scattered by the particles. Signup and view all the answers

What are the conditions for a colloidal system to exhibit stability?

There must be equal repulsive and attractive forces. Signup and view all the answers

How is a floc formed in a colloidal dispersion?

By the adherence of particles to one another. Signup and view all the answers

What defines the term 'colloidal stability'?

The resistance of particles to aggregation and long shelf-life. Signup and view all the answers

What happens when all particles in a colloidal dispersion have mutual repulsion?

The dispersion will remain stable. Signup and view all the answers

What is the term for an initially formed aggregate in a colloidal system?

Floc. Signup and view all the answers

What could potentially happen to a floc once it has formed?

It may or may not separate out. Signup and view all the answers

What is one desirable property of an ideal emulsifying agent?

It should reduce surface tension to 10 dynes/cm. Signup and view all the answers

Which property is necessary for emulsifying agents to prevent coalescence?

They should impart droplets an adequate electrical potential. Signup and view all the answers

What characteristic makes acacia a good emulsifying agent for oral emulsions?

It has a high viscosity and forms a thick film at the oil/water interface. Signup and view all the answers

Which of the following polysaccharides is known to prevent creaming in emulsions?

Acacia Signup and view all the answers

What is a disadvantage of using tragacanth as an emulsifying agent?

It is too sticky for internal use. Signup and view all the answers

Which property does not characterize an effective emulsifying agent?

It should be effective only at high concentrations. Signup and view all the answers

What is a common property of polysaccharides used as emulsifying agents?

They tend to increase the viscosity of emulsions. Signup and view all the answers

What is one advantage of using tragacanth in emulsions?

It does not contain oxidase and needs only a small amount. Signup and view all the answers

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Questions and Answers

What is a primary risk associated with using metal containers?

What is a potential issue with rubber closures in pharmaceutical use?

What is one disadvantage of using rubber in pharmaceutical packaging?

Which of the following is considered an advantage of using plastic containers over glass?

Which material is suggested to improve rubber stoppers?

What is an advantage of low and medium density polyethylene in container design?

Which of these factors does NOT contribute to the choice of containers?

What problem is primarily associated with rubber stoppers in the pharmaceutical field?

What characterizes suspensions in terms of their composition?

Which factor is crucial for the formulation of a good suspension?

What is the main role of suspending agents in suspensions?

Which of the following is NOT a common problem encountered when formulating suspensions?

Which method is typically used for the preparation of suspensions?

What is the role of a dialysis membrane in the purification process?

What therapeutic benefit does colloidal copper provide?

Why is coarsely powdered sulfur poorly absorbed when administered orally?

Which of the following macromolecules is commonly used as a plasma substitute?

What unusual property do certain medicinal colloids, like colloidal silver iodide, possess?

What is the function of plasma proteins mentioned in the context of drug molecules?

Which of the following is NOT considered a colloidal substance according to the content?

What potential side effect does colloidal sulfur have when absorbed in high doses?

What happens to the particles in a stable colloidal dispersion?

What does the Tyndall Effect demonstrate in a colloidal dispersion?

What are the conditions for a colloidal system to exhibit stability?

How is a floc formed in a colloidal dispersion?

What defines the term 'colloidal stability'?

What happens when all particles in a colloidal dispersion have mutual repulsion?

What is the term for an initially formed aggregate in a colloidal system?

What could potentially happen to a floc once it has formed?

What is one desirable property of an ideal emulsifying agent?

Which property is necessary for emulsifying agents to prevent coalescence?

What characteristic makes acacia a good emulsifying agent for oral emulsions?

Which of the following polysaccharides is known to prevent creaming in emulsions?

What is a disadvantage of using tragacanth as an emulsifying agent?

Which property does not characterize an effective emulsifying agent?

What is a common property of polysaccharides used as emulsifying agents?

What is one advantage of using tragacanth in emulsions?

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