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Which one of the following is not applic...

Which one of the following is not applicable to the phenomenon of adsorption?

A

When acetic acid solution is shaken with charcoal the concentration of the acid decreases.

B

The white precipitate of `Mg(OH)_(2)` attains blue colour when precipitated in the presence of magneson reagent.

C

The air becomes dry in the presence of silica gel.

D

An aqueous solution of NaOH attains pink colour with a drop of phenolphthalein.

Text Solution

Verified by Experts

The correct Answer is:
D
Colour of the indicator changes due to change in pH and not because of adsorption
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DISHA PUBLICATION-SURFACE CHEMISTRY-Exercise-2 :Concept Applicator
  1. Methylene blue, from its aqueous solution is adsorbed on activated cha...

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  2. In freundlich adsorption isotherm, the value of 1/n is :

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  3. Which one of the following is not applicable to the phenomenon of adso...

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  4. Which of the following statements is incorrect regarding physisorption...

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  5. In the titration of Cl^(-)ions in solution with AgNO(3) sodium salt of...

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  6. In an experiment, 200 mL of 0.5M oxalic acid is shaken with 10 g of ac...

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  7. The oxidation of oxalic acid by acidified KMnO4 becomes fast as the re...

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  8. A chemical reaction has catalyst X. Hence X

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  9. On adding AgNO(3) solution into KI solution, a negatively charged coll...

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  10. A sol is prepared by addition of excess of AgNO(3) solution in KI solu...

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  11. The gold numbers of protective colloids A,B,C and D are 0.04, 0.004, 1...

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  12. which of the following statement is not true about the oil - in - wat...

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  13. Select incorrect statement

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  14. for the coagulation of 50 mL of ferric hydroxide sol 10 mL of 0.5 M KC...

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  15. If the dispersed phase is a liquid and the dispersion medium is a soli...

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  16. Coagulation value of the electrolytes AlCl(3) and NaCl for As(2)S(3) s...

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  17. The density of gold is 19 g //cm^(2).Find the volume of 95 g of gold.

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  18. The charge on the colloidal particle is due to preferential adsorption...

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  19. which of the following does not contain a hydrophobic structures.

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  20. A thixotropic gel is characterised by

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