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WorksheetsSurfactant and Emulsions
Total questions: 15
Worksheet time: 9mins
What type of emulsion is a w/o/w emulsion?
Primary emulsion
Microemulsion
Multiple emulsion
Monoemulsion
The purpose of an emulsifier is to ___________ .
Decrease surface area in a suspension
Reduce the interfacial tension between immiscible phase
Minimize the size of globules
Improve medication taste
A substance that allows oil and water to mix or emulsify is known as ________ .
Antioxidant
Emulsifier/Surfactant
Preservative
Colouring agent
The tail of a surfactant molecule is oil-loving or known as ________?
hydrophile
lipophobic
lipophilic
hydrophilic
Oil and Water is an example of a(n)...
Suspension
Emulsion
Colloid
Solution
Ratio of oily phase to aqueous phase to gum of Fixed oil (eg. Castor Oil BP)
4 - 3 - 1
4 - 2 - 2
4 - 1 - 2
4 - 2 - 1
Ratio of oily phase to aqueous phase to gum of Volatile oil (eg. Cinnamon Oil BP)
2 - 2 - 1
2 - 2 - 2
2 - 1 - 2
2 - 1 - 1
The condition labelled as 'C' indicates
Breaking
Sedimentation
Creaming
Flocculation
Above is one of test done to determine Types of Emulsion. What is the name of the test?
Cobalt suphate test
Cobalt chloride test
Cobalt oxide test
cobalt blue test
Gelatin and Wool fat are examples of Emulsifying Agent originated from vegetable source.
TRUE
FALSE
Breaking of an emulsion can be reversible by vigorous agitation
TRUE
FALSE
__________ is a procedure when oil is triturated with the gum before adding in water for preparing Primary Emulsion.
English method
Wet Gum method
Trituration method
Continental method
The result observation labelled as "B" indicates __________ emulsion
Water-in-oil
Oil-in-water
W-o-W
O-w-O
Secondary Emulsion (multiple emulsion) can be used to increase the stability of the stability of active compound.
TRUE
FALSE
