Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 1 to 10 out of 203 Questions
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1.
What is called the boundary that separates the phases in two bulks ?
(a) Line
(b) Point
(c) Slash
(d) Interface
Answer:

Option (d)

2.
On which does the interface depend ?
(a) on the volume of molecules in the bulk phase
(b) on the weight of molecules in the bulk phase
(c) on the number of molecules in the bulk phase
(d) on the physical state of molecules in the bulk phase
Answer:

Option (a)

3.
Which of the following is not an example of surface phenomenon ?
(a) Dissolution
(b) Corrosion
(c) Electrode reaction
(d) Homogeneous catalysis
Answer:

Option (d)

4.
How many Pascal high vacuum is required for obtaining completely pure surface of metals ?
(a) 10-8 to 10-9
(b) 10-8 to 10-10
(c) 10-6 to 10-9
(d) 10-8 to 10-7
Answer:

Option (a)

5.
What is the phenomenon called when the molecules adsorbed on the surface are released by any reason ?
(a) Sorption
(b) Desorption
(c) Adsorption
(d) Precipitation
Answer:

Option (b)

6.
Because of adsorption _____
(a) Surface energy decreases
(b) Surface energy increases
(c) The value of surface energy becomes zero
(d) No change takes place
Answer:

Option (a)

7.
By which other name the adsorption of gases on the solid surface is known ?
(a) Evaporation
(b) Surface tension
(c) Condensation
(d) Sorption
Answer:

Option (c)

8.
What is the substance that is adsorbed called ?
(a) Adsorbent
(b) Adsorbate
(c) Absorsent
(d) Absorbite
Answer:

Option (b)

9.
Which of the following substances is not an adsorbent ?
(a) Sugar
(b) Clay
(c) Silica gel
(d) Alumina
Answer:

Option (a)

10.
What type of attraction forces are present between adsorbent and adsorbate in physisorption ?
(a) van der Waals
(b) Strong chemical
(c) Gravitation
(d) Metallic bond
Answer:

Option (a)

Showing 1 to 10 out of 203 Questions
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