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