Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 141 to 150 out of 203 Questions
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141.
What are the dispersed phase and dispersing medium respectively in butter ?
(a) Solid and liquid
(b) Liquid and liquid
(c) Solid and solid
(d) Liquid and solid
Answer:

Option (d)

142.
Which of the following is not an example of solid sol ?
(a) Coloured glass
(b) Foam
(c) Floatation
(d) Gemstone
Answer:

Option (c)

143.
Which of the following is not a gel?
(a) Cheese
(b) Hair cream
(c) Butter
(d) Jelly
Answer:

Option (b)

144.
What is type of colloids like smoke, insecticide spray, cloud and dust ?
(a) Sol
(b) Solid sol
(c) Aerosol
(d) Emulsion
Answer:

Option (c)

145.
What is the name of a sol in which dispersion medium is water ?
(a) Solid sol
(b) Aerosol
(c) Alcosol
(d) Aqua sol
Answer:

Option (d)

146.
Which of the following is not an example of reversible sol ?
(a) Egg albumin
(b) Gum
(c) Starch
(d) Rubber
Answer:

Option (a)

147.
In which of the following colloids is artificial rubber included ?
(a) Multi molecular colloid
(b) Multiple molecular colloid
(c) Associated colloid
(d) Macromolecular colloid
Answer:

Option (d)

148.
Which of the following is not a property of a hydrophilic colloid ?
(a) Dispersed phase is obtained easily at high concentration.
(b) Its coagulation is reversible.
(c) Viscosity and surface tension are nearly the same as those of water.
(d) The charge on the particles depends on pH of the medium and it can be positive, negative or zero.
Answer:

Option (c)

149.
What happens when hydrophilic solution is added to emulsion ?
(a) A protective layer is formed around the dispersed phase. (around the particles of dispersed phase)
(b) A protective layer is formed around the dispersion medium.
(c) Aerosol is formed.
(d) True solution is formed.
Answer:

Option (a)

150.
Which method is used to determine the molecular mass of polymer molecules like colloid ?
(a) Decrease in vapour pressure
(b) Depression in freezing point
(c) Osmotic pressure
(d) Elevation in boiling point
Answer:

Option (c)

Showing 141 to 150 out of 203 Questions
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