Choose the correct answer (A to D). Oil-soluble surfactantsQuestion 14Answera.They are always the main component in an oil-water emulsifying mixtureb.None of the answers are correctc.Have a high HLB valued.They can used to stabilise both oil-water and water-oil emulsions.

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.

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

ith regard to the following formula , __________ surfactant is the emulsifying agent .IngredientsMaster FormulaScaled formula (50 g)Yellow beeswax5 g Liquid paraffin15 g Borax (sodium borate)2.5 g Water4.75 g Question 6AnswerCationic Bentonite Nonionic Anionic Natural

Which of the following directly influences the in vitro physical stability of an oil-in-water emulsion inwhich the drug is incorporated in the dispersed phase?a. Amount of preservative addedb. Molecular weight of the drugc. Solubility of the emulsifier in waterd. Particle size of the internal phasee. Type of suspending agent use

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