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Q.

Identify the statements which is incorrect w.r.t. surface phenomenon.

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a

A sol, prepared by adding excess AgNO3 solution in KI solution when subjected to electro-phoresis will show coagulation near cathode.

b

The conductivity of a soap solution decreases steeply at CMC.

c

Tyndall effect will be more prominent in gold solution as compared to rubber solution.

d

Extent of physisorption increases with increase in temperature initial and then decreases with

answer is D.

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Detailed Solution

(A) AgI / Ag+ positively charged solution (excess AgNO3)

(B) Factual information
(C) Tyndall effect is more dominating in lyophobic solution
(D) Extent of physisorption decreases with increase in temperature.

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Identify the statements which is incorrect w.r.t. surface phenomenon.