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Chemistry
Which one of the following is not explained by adsorption?
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Q. Which one of the following is not explained by adsorption?
KEAM
KEAM 2014
Surface Chemistry
A
When acetic acid solution is shaken with charcoal, the concentration of the acid decreases
67%
B
The white precipitate of $Mg(OH)_2$ attains blue colour when precipitated in the presence of magneson reagent
0%
C
The air becomes dry in the presence of silica gel
33%
D
An aqueous solution of NaOH attains pink colour with a drop of phenolphthalein
0%
E
When animal charcoal is shaken with coloured methylene blue solution, the solution turns colourless
0%
Solution:
Colour of the indicator changes due to change in pH and not because of adsorption