16 Questions
Which operation involves the mechanical reduction of the size of solid particle sizes?
Granulation
What is the primary purpose of unit operations in pharmaceutical technology?
To make active substances and excipients suitable for use in production
Which unit operation involves the process of heat transfer and drying?
Distillation
What does the process of granulation include?
Cutting, crushing, grinding, and comminuting
What is the main reason for reducing the sizes of particles in pharmaceutical technology?
To improve their contact with the environmental liquid
Which method is commonly used for reducing the size of particles through crushing in pharmacies?
Trituration
When working with substances such as iodine and methylene blue, which type of mortar may be preferred for grinding?
Glass mortar
What is the primary purpose of grinding by the aid of a solvent in pharmaceutical technology?
To grind adhesive substances that are difficult to grind
Which characteristic of particles increases as their size decreases during grinding?
Hygroscopic attribute
What should be the basis for mixing in the mortar during grinding?
Geometric dilution principle
What is the disadvantage associated with grinding active ingredients in pharmaceutical technology?
Turn into an unstable or inactive crystal form
What is levigation used for in pharmaceutical technology?
Preparation of dermatological and ophthalmic ointments
What does widening circular motions of pestle in the mortar facilitate during mixing?
Even particle distribution
Why might a porcelain mortar be preferred over a glass mortar for grinding certain substances?
For ensuring easier and better grinding due to its rough surface
What is the primary purpose of preparing a paste through levigation in pharmaceutical technology?
To be used in preparation of dermatological and ophthalmic ointments
What is the purpose of using widening circular motions of pestle during mixing in the mortar?
To ensure homogeneity by following geometric dilution principle
Test your knowledge of unit operations in pharmaceutical technology with this quiz related to PHAR 261 Introduction to Pharmaceutical Technology. The quiz covers operations performed when active substances and excipients cannot be directly used in drug manufacture.
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