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Question:

The correct statement(s) about surface properties is (are):
cloud is an emulsion type of colloid in which liquid is dispersed phase and gas is dispersion medium
adsorption is accompanied by decrease in enthalpy and decrease in entropy of the system
the critical temperatures of ethane and nitrogen are 563 K and 126 K, respectively. The adsorption of ethane will be more than that of nitrogen on same amount of activated charcoal at a given temperature
brownian motion of colloidal particles does not depend on the size of the particles but depends on the viscosity of the solution

adsorption is accompanied by decrease in enthalpy and decrease in entropy of the system

the critical temperatures of ethane and nitrogen are 563 K and 126 K, respectively. The adsorption of ethane will be more than that of nitrogen on same amount of activated charcoal at a given temperature

brownian motion of colloidal particles does not depend on the size of the particles but depends on the viscosity of the solution

cloud is an emulsion type of colloid in which liquid is dispersed phase and gas is dispersion medium

Solution:

(B) Adsorption is accompanied by a decrease in enthalpy and a decrease in entropy of the system. For adsorption both enthalpy change and entropy change are negative. The Gibbs free energy change is also negative.