Which of the following is NOT a characteristic of a good emulsifying agent?
It should reduce the interfacial tension between the two liquids.
It should be completely soluble in either the dispersed phase or the dispersion medium.
It should form a protective film around the dispersed phase.
It should have some affinity for both the dispersed phase and the dispersion medium.
Related Questions
The Kraft temperature is the temperature:
above which micelles form
below which micelles form
at which the surfactant precipitates
at which the emulsion inverts
Which of the following is an example of an oil-in-water emulsion?
Butter
Margarine
Mayonnaise
Petroleum Jelly
An emulsifier is a substance which
Stabilises the emulsion
Homogenises the emulsion
Coagulates the emulsion
Accelerates the dispersion of liquid in liquid
The hydrophilic part of a soap molecule is:
Hydrocarbon chain
Carboxylate group
Benzene ring
Ester group
For the coagulation of methylene blue sol, the flocculating power of which of the following ion is maximum ?
In emulsion the dispersed phase and dispersion medium are :
Both solids
Both liquids
A solid and liquid
A liquid and solid
Which of the following contributes to the cleansing action of soap BUT NOT detergents?
Precipitation with hard water ions
Lowering of surface tension
Emulsification of grease
Formation of micelles
In whipped cream, the dispersed phase and dispersion medium respectively are
Liquid and liquid
Gas and liquid
Liquid and gas
Liquid and solid
The hydrophilic-lipophilic balance (HLB) value of a surfactant is 16. This surfactant is most likely to be used in which type of emulsion?
Oil-in-water (o/w)
Water-in-oil (w/o)
Both o/w and w/o equally
Neither o/w nor w/o
From the following which is not an emulsifier?
Lecithin
Polysaccharides
Proteins
Tweens
