which one of the following characteristics is not correct

Which one of the following characteristics is not correct for physical adsorption ?

A. Adsorption increases with increase in temperature

B. Adsorption is spontaneous

C. Both enthalpy and entropy of adsorption are negative

D. Adsorption on solids is reversible

Answer : Adsorption increases with increase in temperature

Solution :
As adsorption is an exothermic process.
∴ Rise in temperature will decrease adsorption ( according to Le-chatelier principle ) .

Releted MCQ Question on
Physical Chemistry >> Surface Chemistry

Releted Question 1

Rate of physiorption increases with

A. decrease in temperature

B. increase in temperature

C. decrease in pressure

D. decrease in surface area

View Answer

Releted Question 2

Adsorption of gases on solid surface is generally exothermic because

A. enthalpy is positive

B. entropy decreases

C. entropy increases

D. free energy increases

View Answer

Releted Question 3

Lyophilic sols are

A. Irreversible sols

B. They are prepared from inorganic compound

C. Coagulated by adding electrolytes

D. Self-stabilizing

View Answer

Releted Question 4

Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is : -

A. $$C{H_3}{\left( {C{H_2}} \right)_{15}}{N^ + }{\left( {C{H_3}} \right)_3}B{r^ - }$$

B. $$C{H_3}{\left( {C{H_2}} \right)_{11}}OSO_3^ - N{a^ + }$$

C. $$C{H_3}{\left( {C{H_2}} \right)_6}CO{O^ - }N{a^ + }$$

D. $$C{H_3}{\left( {C{H_2}} \right)_{11}}{N^ + }{\left( {C{H_3}} \right)_3}B{r^ - }$$

View Answer

Which one of the following characteristics is not correct for physical adsorption ?

Releted MCQ Question on
Physical Chemistry >> Surface Chemistry

Rate of physiorption increases with

Adsorption of gases on solid surface is generally exothermic because

Lyophilic sols are

Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is : -

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Surface Chemistry

Practice More MCQ Question on Chemistry Section

Which one of the following characteristics is not correct for physical adsorption ?

Releted MCQ Question on Physical Chemistry >> Surface Chemistry

Rate of physiorption increases with

Adsorption of gases on solid surface is generally exothermic because

Lyophilic sols are

Among the following, the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient condition is : -

Practice More Releted MCQ Question on Surface Chemistry

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Physical Chemistry >> Surface Chemistry

Practice More Releted MCQ Question on
Surface Chemistry