HARD
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Foam rubber is an example of _____ colloid.(gas in gas/gas in liquid)

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Important Questions on Surface Chemistry

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Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Fog is a colloidal solution of:
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In the following, which type of colloidal system is Fog-
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Ferric chloride is applied to stop bleeding because
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
When a sulphur sol is evaporated sulphur is obtained. On mixing with water sulphur sol is not formed. The sol is
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us

Why are medicines more effective in colloidal state?

MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
The coagulating power of electrolytes having ions Na+,  Al3+ and Ba2+ for arsenic sulphide sol increases in the order,
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Photographic plates are prepared by coating emulsion of which of the following in gelatin.
HARD
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
The correct statement(s) about surface properties is(are)
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Give reasons for the following: FeCl3 solution is used to stop bleeding.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Mention two industrial applications of colloids.
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
How does the precipitation of colloidal smoke take place in Cottrell precipitator?
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
To stop blood from a wound, which of the following sol is preferred?
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Among the following, the correct statement is:
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
For coagulation of arsenious sulphide sol, which of the following salt solutions will be most effective?
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
The most appropriate method of making egg-albumin sol is:
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Peptization is a:
HARD
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Two solutions, A and B, each of 100L was made by dissolving 4g of NaOH and 9.8g of H2SO4 in water, respectively. The pH of the resultant solution obtained from mixing 40L of solution A and 10L of solution B is ____________. (log 2=0.3)
MEDIUM
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Explain the cleansing action of soap and detergents.
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
The critical micelle concentration of a surfactant depends on
EASY
Chemistry>Physical Chemistry>Surface Chemistry>Colloids Around Us
Colloidal solution commonly used in treatment of skin diseases is: