1
Question
Match the pairs (choose the correct answer from section 'B' for section 'A'):
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Solution
Gold Solution is a Lyophobic colloid. There is no affinity between gold particles (dispersed phase) and the dispersion medium
Gold
Number is used for Lyophillic colloids. It is defined as the minimum
amount of protective colloid in milligrams which prevents a colour change
from red to violet of 10 ml gold sol by the addition of 1 ml of 10% NaCl
solution.
Coagulation Power is governed by Hardy-Schulze Rule.
Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation.
Physical Adsorption involves weak Van der Waals Forces of attraction.
Corrosion is an Electro-chemical phenomenon. It involves a redox reaction.
Gold
Number is used for Lyophillic colloids. It is defined as the minimum
amount of protective colloid in milligrams which prevents a colour change
from red to violet of 10 ml gold sol by the addition of 1 ml of 10% NaCl
solution.
Coagulation Power is governed by Hardy-Schulze Rule.
Greater is the valency of the oppositely charged ion of the electrolyte being added, the faster is the coagulation.
Physical Adsorption involves weak Van der Waals Forces of attraction.
Corrosion is an Electro-chemical phenomenon. It involves a redox reaction.
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