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Proteins, gums are the examples of emulsifying agents in oil in water type emulsion.

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Important Questions on Surface Chemistry

EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Briefly explain the different types of emulsions and give example for each.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions

Given below are two statements:

Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.

Statement II : For stabilisation of an emulsion, excess of electrolyte is added.

In the light of the above statements, choose the most appropriate answer from the options given below :

MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
What is an Emulsion? How emulsions are classified. Give one example for each type of emulsion.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions

What is difference between an emulsion and a gel?

MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
What are emulsions? What are their different types? Give examples of each type.
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Give one example each of oil in water emulsion and water in oil emulsion.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
What is an Emulsion? How emulsions are classified. Give one example for each type of emulsion.
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
What happens when an emulsion is centrifuged?
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
In which emulsion coloured droplets are obtained when oil soluble dye is added to it?
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Which of the following processes is responsible for the digestion of fats in the intestines?
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Example of payas (Emulsion) is
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions

Give reasons for the following statement:

Gelatin is generally added to ice cream.

MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Write dispersed phase and dispersion medium of milk, a colloidal solution.
HARD
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
The correct statement(s) about surface properties is(are)
HARD
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
What are emulsifying agents? Give examples of emulsifying agents for water in oil type of emulsion.
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
An emulsifier is a substance which
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Gelatin, which is a peptide is added in ice-creams. What can be its role?
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
How do emulsifiers stabilise emulsion? Name two emulsifiers.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Milk can be preserved for long by adding a few drops of HCHO, which acts as
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Emulsions
Cotyledons are also called-