Adsorption of log(x/m) and log P was found of the following type. This is true when:-
1. n =
2. 1/n = 1
3. P = 0
4. 1/n =
Which one has the highest coagulation power?
1. K+
2. Ca++
3. Al+++
4. Sn4+
The charge on As2S3 sol is due to to the adsorbed:-
(1) H+
(2) OH-
(3) O-2
(4) S-2
In the langmuir adsorption isotherm, the postulates were:-
(A) Adsorption of a gas molecule at a particular site depends on neighboring sites.
(B) Gases undergoes adsorption behave ideally
(1) Only A is correct
(2) Only B is correct
(3) Both are correct
(4) None of these
The most suitable electrolyte for the coagulation of arsenic sulphide will be:-
1. AlCl3
2. BaCl2
3. NaCl
4. KCl
According to Freundlich adsorption isotherm, which of the following is correct:-
(1)
(2)
(3)
(4) All are correct for different ranges of pressure
Colloidal solution of gold prepared by different methods of different colours because of:
1. different diameters of colloidal gold particles
2. variable valency of gold
3. different concentration of gold particles
4. impurities produced by different methods
At the critical micelle concentration (CMC) the surfactant molecule
1. deccompose
2. dissociate
3. associate
4. become completely soluble
10 mg starch protected 5 ml gold sol in 1 ml 2 % NaCl solution. The gold number of starch is:
1. 20
2. 40
3. 80
4. 100
What is the most effective electrolyte for precipitating Fe(OH)3 sol?
1. NaCl
2. BaSO4
3. AlCl3
4. Na3PO4