catalytic poisons act by 969023658

Catalytic poisons act by :

A. making the products chemically inactive.

B. increasing the rate of the backward reaction.

C. chemical combination with any one of the reactants.

D. preferential adsorption on the catalyst surface.

Answer : preferential adsorption on the catalyst surface.

Solution :
The catalytic poisons decrease the activity of the catalyst because they are preferentially adsorbed on the surface of catalyst.

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

Catalytic poisons act by :

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

Catalytic poisons act by :

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