1
Question
Which phenomenon is/are observed during washing of clothes by detergents?
Which phenomenon is/are observed during washing of clothes by detergents?
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Solution
The correct options are
A Micelle formation
B Emulsification
C Foaming
D Adsorption
Micelle is an aggregate of surfactant molecules dispersed in a liquid colloid. A typical micelle in aqueous solution forms an aggregate with the hydrophilic "head" regions in contact with surrounding solvent.
Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid, or dissolved solid to a surface.
Emulsification is the process of making emulsions. Emulsions are made by shaking the dispersed phase and dispersion medium vigorously and then stabilizing the emulsion with an emulsifier. Most often soaps and detergents are added to stabilize emulsions. Stabilization is obtained by the coating of the drops of an emulsion by the stabilizer. This prevents the drops of the emulsion from combining together and separating out as a separate layer.
Foaming is the volume is expansion using air bubbles. This enables a rather lightweight material to be created even when it occupies a large volume. Also, the air layer adds heat-insulating and shock-absorbing (cushioning) properties. This happens when we apply soap while washing our clothes.
So, all phenomenon are observed during washing of cloth by detergents.
Hence, options A,B,C and D, all are correct options.
A Micelle formation
B Emulsification
C Foaming
D Adsorption
Micelle is an aggregate of surfactant molecules dispersed in a liquid colloid. A typical micelle in aqueous solution forms an aggregate with the hydrophilic "head" regions in contact with surrounding solvent.
Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid, or dissolved solid to a surface.
Emulsification is the process of making emulsions. Emulsions are made by shaking the dispersed phase and dispersion medium vigorously and then stabilizing the emulsion with an emulsifier. Most often soaps and detergents are added to stabilize emulsions. Stabilization is obtained by the coating of the drops of an emulsion by the stabilizer. This prevents the drops of the emulsion from combining together and separating out as a separate layer.
Foaming is the volume is expansion using air bubbles. This enables a rather lightweight material to be created even when it occupies a large volume. Also, the air layer adds heat-insulating and shock-absorbing (cushioning) properties. This happens when we apply soap while washing our clothes.
So, all phenomenon are observed during washing of cloth by detergents.
Hence, options A,B,C and D, all are correct options.
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