Physical adsorption is appreciable at :–

 The rate of physical adsorption:–

Which of the following is not a characteristic of chemi–sorption :–

Which one of the following is not a correct statement?

The amount of gas adsorbed on charcoal increases with :–

Which is correct :-

Adsorption is accompanied by :-

Graph between log(x/m) and log p is a straight line at an angle 45° with intercept on y-axis 0.3010.Calculate the amount of gas adsorbed in gram per gram of the adsorbent when pressure is 0.2 atm.

Sorption is the term used when :

The volume of gases H2, CH4, CO2 and NH3 adsorbed by 1 g of charcoal at 288K are in the order : 

The extent of adsorption of a gas on a solid depends on : 

Which forms multi molecular layers during adsorption:

A substance is a better adsorbent in its finely powdered form as compared to crystalline form because : 

Which of the following processes will be observed when a chalk stick is dipped in the solution of ink? 

The number of phases present in colloidal solution is :

Butter is a colloid formed when :–

Lyophobic colloids are :–(1) Reversible (2) Irreversible(3) Water loving (4) Solvent loving

When freshly precipitated Fe(OH)3 is boiled with water in the presence of few drops of dilute HCl, a hydrated ferric oxide sol is obtained. This method is termed as:

Greater the valency, the higher is the coagulating power of ion. This rule was introduced by :

The capacity of an ion to coagulate a colloidal solution depends on :

All colloidal solutions show :

The charge of As₂S₃ sol is due to the absorbed :

Brownian motion shown by colloidal particles is its - ------------ property :

In both dialysis and osmosis which particle do not pass through SPM : 

The correct statement in case of milk :- 

A colloidal system involves :- 

In electrophoresis :- 

Which is not shown by sols :-

Which of the following is an emulsifier ? 

Emulsifiers are generally :- 

Which of the following is most effective in causingthe coagulation of ferric hydroxide sol :-

The colloidal sol of SnCl4 prefers to adsorb _____in excess of HCl :

On adding AgNO3 solution into KI solution, a negatively charged colloidal sol is obtained when they are mixed as :

Micelles are :

Which of the following sol is formed due to following reaction :- SnO2 + HCl (Excess)--------

Which of the following ion has minimum flocculation value:

A negatively charged suspension of clay in water needs for precipitation the minimum amount of:

Which is not a colloidal solution :

Which one is natural colloid :

Medicines are more effective if they are used in :

Egg albumin is :

Gelatin protects :-

The coagulating power of an effective ion carrying the charge opposite to the sol particles has been illustrated by :-

An example of micelle is :–

Hardy-Schulze rule states that :-

Which of the following has minimum flocculation value:–

The gold numbers of A, B, C & D are 0.04, 0.002,10 and 25 respectively. The protective powers of A, B, C and D are in the order :–

On addition of 1 mL of 10% NaCl solution to10 mL  gold sol in presence of 0.025 g of starch, the coagulation is just prevented. The gold number of starch is :–

Gold number is a measure of :–

Opal (mineral with liquid inclusions) is a: