Surface Chemistry - Physical Chemistry - Chemistry Previous Year Questions

Adsorption of a gas a solid adsorbent follows. Freundlich adsorption isotherm. If $x$ is the mass of the gas adsorbed on mass ' $m$ ' of the adsorbent at pressure $p$. From the graph given extent of adsorption is proportional to

The most effective coagulating agent for antimony sulphide sol is

Which of the following is not correct about Freundlich adsorption isotherm?

$$\text { Match the following. }$$

$$\begin{array}{llll} \hline & \text { List-I (Type of colloid) } & & \text { List-II (Example) } \\ \hline \text { A } & \text { Sol } & \text { I } & \text { Cloud } \\ \hline \text { B } & \text { Foam } & \text { II } & \text { Whipped cream } \\ \hline \text { C } & \text { Gel } & \text { III } & \text { Paint } \\ \hline \text { D } & \text { Aerosol } & \text { IV } & \text { Butter } \\ \hline \end{array}$$

The correct answer is

The correct statements about the properties of colloidal solutions are

A. Tyndall effect is used to distinguish between a colloidal solution and a true solution.

B. Zeta potential is related to movement of colloidal particles.

C. Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.

D. Brownian motion stabilises the sols.