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