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27 February, 07:02

Identify the true statements about colloids.

a.) Emulsions are a type of colloid

b.) The particals of a colloid are larger than the particles of a solution

c.) The particles of a colloid will settle over time

d.) Many colloids scatter light (tyndal effect)

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  1. 27 February, 07:22
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    Answer : The true statements are:

    (a) Emulsions are a type of colloid

    (b) The particles of a colloid are larger than the particles of a solution

    (d) Many colloids scatter light (tyndal effect)

    Explanation:

    Colloid : It is defined as the solution in which the one substance is insoluble in another solution that means the insoluble substance rotating in the solution.

    The particles of a colloid are larger than the particles of a solution.

    Colloid do not separate on standing.

    Cannot be separated by filtration.

    Scatter light (Tyndall effect).

    For example:

    Milk is considered as a colloid because various substances (fats, proteins etc ...) are present in milk which are suspended in a solution.

    Suspension : It is a heterogeneous mixture in which some of the particles are settle down in the mixture on standing or over time.

    The particles in a suspension are far larger than those of a solution.

    Emulsion : It is a mixture of two or more liquids that are normally immiscible.

    Emulsions are a type of colloid.
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