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Questions and Answers
What is the difference between spans and tweens?
What is the difference between spans and tweens?
- Spans form W/O emulsions while tweens form O/W emulsions (correct)
- Spans are water-soluble while tweens are not
- Spans are hydrophilic while tweens are lipophilic
- Spans are polyoxyethylene derivatives while tweens are fatty acid esters
What is an example of a non-ionic synthetic emulsifying agent?
What is an example of a non-ionic synthetic emulsifying agent?
- Span 80 (correct)
- Triethanolamine oleate
- Sodium lauryl sulfate
- Calcium stearate
What are the advantages of non-ionic surfactants over anionic and cationic surfactants?
What are the advantages of non-ionic surfactants over anionic and cationic surfactants?
- None of the above.
- They are not affected by the presence of electrolytes.
- Both A and B. (correct)
- They are not susceptible to pH changes.
What are the disadvantages of using soaps orally (internally)?
What are the disadvantages of using soaps orally (internally)?
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What is the nascent soap method used for?
What is the nascent soap method used for?
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