Related Questions
Bredig’s arc method cannot be used for the preparation of colloidal sol of
Copper
Gold
Silver
Sodium
Aerosols are colloidal systems. Which of the following best describes the composition of fog as an aerosol?
Gas dispersed in liquid
Liquid dispersed in gas
Solid dispersed in gas
Gas dispersed in solid
Which is not a property of hydrophilic sols?
High concentrations of dispersed phase can be easily attained
Coagulation is reversible
Viscosity and surface tension are about the same as of dispersion medium
The charge of the particle depends on the pH values of the dispersion medium; it may be positive, negative
A precipitate is changed to colloidal solution by the following processDialysis
Dialysis
Ultrafiltration
Peptization
Electrophoresis
Tails of comets are visible due to :
Tyndall effect
Reflection
Brownian motion
None of these
Which is not shown by sols?
Adsorption
Tyndall effect
Flocculation
Paramagnetism
Conversion of milk into curd is made by the enzyme :
Diastase
Invertase
Micoderma bacilli
Lactic bacilli
Which one is hydrophobic in nature?
Gelatin
Sulphur
Starch
Protein
Which forms micelles in aqueous solution above certain concentration?
Glucose
Dodecyl trimethyl ammonium chloride
Urea
Pyridinium chloride
The coagulation of sol particles or sol destruction may be brought in by :
By electrophoresis
By mixing two oppositely charged sols
By adding electrolytes
All of these
