Question

Which of the following phenomenon occurs when the precipitate of $Mg(OH{)}_2$ attains blue colour in presence of magneson reagent?
(i) Absorption of solvent
(ii) Adsorption of coloured substance
(iii) Absorption and adsorption both of solvent
(iv) Adsorption of solvent

• A. (i) and (ii)
• B. (ii) only
• C. (ii) and (iv).
• D. (iii) only

Answer 1

Answer: (C)

Correct answer is (c) (ii) and (iv).