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Effectiveness of Different Common Oils in Forming Emulsions
Effectiveness of Different Common Oils in Forming Emulsions
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1)
Which one of the following is an oil in water emulsion?
Coconut oil
Milk
Butter
Cod liver oil
2)
The substance used to stabilize an emulsion is known as?
Emulsifier
Peptizing agent
Colloids
Demulsifier
3)
Which one of the following is a food emulsifier?
Egg yolk
Sodium salt of higher fatty acids
Wax
Vanishing cream
4)
Which one of the following is a water in oil emulsion?
Butter
Detergent
Vanishing cream
Wax
5)
What is the role played by an emulsifier in the stability of emulsions?
It neutralizes the charge on the suspended particles.
Emulsion can be diluted.
It lowers the interfacial tension between the two immiscible liquids.
It changes the colloidal particles into insoluble precipitate.
6)
Which of the following is emulsifying agent?
Wax
Glycerine
Alcohol
Soap
7)
What is the process involved in the washing action of soap and detergent ?
Dialysis
Filtration
Electrostatic precipitation
Emulsification
8)
What is the process of splitting an emulsion into its constituent liquids called?
Demulsification
Emulsification
Peptization
Coagulation
9)
Which one of the following is not used as an emulsifying agent?
Proteins
Agar-agar
Gum
Mustard oil
10)
What type of demusification method is used to separate cream from milk?
Filtration
Centrifugation
Freezing
Melting