Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 31 to 40 out of 203 Questions
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31.
By which name the zigzag motion of colloidal particle in the dispersion medium is known ?
(a) Brownian movement
(b) Tyndall motion
(c) Vibrational motion
(d) Mechanical motion
Answer:

Option (a)

32.
By which instrument the existence of positive or negative electric charge of colloid is determined ?
(a) Electrophoresis
(b) Microscope
(c) Ultrasonic dispersant
(d) Voltmeter
Answer:

Option (a)

33.
Which of the following is oil/water (oil in water) emulsion ?
(a) Cold cream
(b) Vanishing cream
(c) Butter
(d) Cod liver oil
Answer:

Option (b)

34.
Which of the following is water/oil (water in oil) emulsion ?
(a) Cold cream
(b) Butter milk
(c) Milk
(d) Vanishing cream
Answer:

Option (a)

35.
Which of the following substances is an emulsifier ?
(a) Common salt
(b) Urea
(c) Oil
(d) Soap
Answer:

Option (d)

36.
Which of the following is a multimolecular colloid ?
(a) Wax
(b) Latex-rubber
(c) Silicones
(d) All the given
Answer:

Option (a)

37.
From which of the following effects the colloidal system is free ?
(a) Gravitational effect
(b) Effect of added electrolyte
(c) Effect of heat
(d) Effect of applied electrical field
Answer:

Option (a)

38.
At isoelectric point the colloid _____
(a) Stabilizes
(b) Peptizises
(c) Does not possess electrical charge
(d) Can not be coagulated
Answer:

Option (c)

39.
By which method ferric hydroxide colloid is prepared ?
(a) Hydrolysis
(b) Peptization
(c) Double decomposition
(d) Oxidation
Answer:

Option (a)

40.
The dimension of colloid particles is _____
(a) Less than that of true solution
(b) Between true solution and suspension
(c) More than that of suspended particles
(d) Can be of any dimension
Answer:

Option (b)

Showing 31 to 40 out of 203 Questions
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