Choose the correct answer (A-D). Parenteral emulsion formulationsQuestion 13Answera.Use non-ionic emulsifying agentsb.Are generally water in oil emulsionsc.Usually a purified vegetable oil is used in the oily phased.All of the answers are correct

Choose the correct answer (A to D). Oil-soluble surfactantsQuestion 3Answera.None of the answers are correctb.Have a high HLB valuec.They can used to stabilise both oil-water and water-oil emulsions.d.They are always the main component in an oil-water emulsifying mixture

Choose the correct answer (A to E). A water in oil emulsionQuestion 8Answera.Has water as the continuous phaseb.Has a greasy texturec.Uses an emulsifier mixture with a relatively high HLB when compared to the HLB of an emulsifier used in an oil-water emulsiond.None of the answers are correct.

Which of the following define or describe an emulsion? Select all answer choices that apply A. the internal phase is the dispersed phase B. none of these are correct so this is the answer C. a liquid dispersed throughout another liquid in which it is not soluble or with which it is not miscible D. the external phase is the vehicle or the continuous phase

Choose the correct answer (A to E). Many natural products used in pharmaceutical emulsions contain emulsifiers. Which one of the following natural products does not contain emulsifier(s)?Question 10Answera.All of the answers are correctb.Wool Fatc.Purified sunflower oild.Beeswaxe.Lanolin

Lecithin is used as a surfactant in many pharmaceutical formulations. Choose the correct statement.Question 12Answera.It is used in parenteral formulations as it is non-toxic.b.None of the statements are correct.c.It is used as a surfactant to produce pharmaceutical w/o emulsions.d.Lecithin is a naturally occurring non-ionic surfactant.e.It consist mainly of phosphatidylserine.