Emulsion Types Quiz

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Questions and Answers

Which type of emulsion has the internal phase as water and the external phase as oil?

  • w/o (water in oil) (correct)
  • o/w/o (oil in water in oil)
  • o/w (oil in water)
  • w/o/w (water in oil in water)

In which type of emulsion are small water droplets enclosed within larger oil droplets, which are then dispersed in water?

  • o/w/o (oil in water in oil)
  • w/o/w (water in oil in water) (correct)
  • o/w (oil in water)
  • w/o (water in oil)

What is the globule size range for microemulsions?

  • 50–500nm (correct)
  • 1000–1500nm
  • 10–50nm
  • 500–1000nm

Which type of emulsion is suitable for intravenous injection?

<p>Water in oil emulsion (D)</p> Signup and view all the answers

What is the advantage of microemulsions for drug administration?

<p>They offer improved drug solubilization and bioavailability (D)</p> Signup and view all the answers

What is the nature of the external and internal phases in a water-in-oil emulsion?

<p>The internal phase is oil, and the external phase is water (A)</p> Signup and view all the answers

Which type of emulsion contains small oil droplets enclosed within larger water droplets, which are then dispersed in oil?

<p>Oil in water in oil (o/w/o) emulsion (D)</p> Signup and view all the answers

What is the globule size range for microemulsions?

<p>50–500nm (B)</p> Signup and view all the answers

What is the advantage of multiple emulsion systems?

<p>Improved drug solubilization and bioavailability (C)</p> Signup and view all the answers

Which type of emulsion is suitable for oral, topical, and parenteral administration?

<p>Microemulsions (D)</p> Signup and view all the answers

Flashcards

What is a w/o emulsion?

Water is the internal phase, and oil is the external phase.

What is a w/o/w emulsion?

Small water droplets within larger oil droplets, dispersed in water.

What is the globule size for microemulsions?

Globule size ranges from 50–500nm.

Which emulsion is suitable for IV injection?

This type of emulsion is a Water in oil emulsion.

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Advantage of microemulsions?

Improved drug solubilization and bioavailability.

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Phases in oil-in-water emulsion?

Internal phase is oil, external phase is water.

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What is o/w/o emulsion?

Small oil droplets within larger water droplets, dispersed in oil.

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Advantage of multiple emulsion systems?

Improved drug solubilization and bioavailability.

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Which emulsion for oral, topical, parenteral use?

Microemulsions are suitable.

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Study Notes

Emulsion Types

  • Water-in-oil emulsion: internal phase is water, external phase is oil.

Microemulsions

  • Globule size range: 10-100 nm.
  • Advantage: suitable for drug administration due to enhanced bioavailability and solubilization of hydrophobic drugs.

Multiple Emulsion Systems

  • Advantage: suitable for oral, topical, and parenteral administration due to versatility and controlled release.

Emulsion Structure

  • Water-in-oil emulsion: small water droplets enclosed within larger oil droplets.
  • Oil-in-water emulsion: small oil droplets enclosed within larger water droplets, then dispersed in oil.

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