Surface Chemistry  MCQs

MCQs of Surface Chemistry

Showing 51 to 60 out of 203 Questions
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51.
What should be the nature of the surface for a good adsorbent ?
(a) Rough
(b) Smooth
(c) Transparent
(d) Porous
Answer:

Option (d)

52.
Which of the following is applicable to Langmuir adsorption isotherm when derived ?
(a) The random motion of molecules of gas.
(b) Kinetic theory of gases.
(c) Magnitude of adsorption of gas.
(d) All the given.
Answer:

Option (b)

53.
What is called the substance which increases the rate of chemical reaction but does not take part in the reaction ?
(a) Adsorbent
(b) Catalyst
(c) Adsorbate
(d) Reactant
Answer:

Option (b)

54.
Which type of catalyst is used in obtaining SO3 gas required in obtaining sulphuric acid by lead chamber process ?
(a) Homogenous catalyst
(b) Heterogeneous catalyst
(c) Catalyst is not used
(d) Vanadium pentoxide
Answer:

Option (a)

55.
Which catalyst is used in the reaction of preparing vegetable ghee form vegetable oil ?
(a) Iron powder
(b) Zinc powder
(c) Raney nickel
(d) Vanadium pentoxide
Answer:

Option (c)

56.
On what does the shape – selective catalytic reaction depend ?
(a) Molecules of product
(b) Size of reactant
(c) Porosity of catalyst
(d) All the given
Answer:

Option (d)

57.
The rate of chemical adsorption _____ .
(a) increases with decrease in temperature
(b) increases with increase in temperature
(c) increases with decrease in the pressure of the gas
(d) it is independent of the pressure of the gas
Answer:

Option (b)

58.
Which of the following statements is incorrect for physical adsorption ?
(a) It is not specific.
(b) It possesses thickness of monomolecular layer.
(c) Its enthalpy of adsorption is low.
(d) It is reversible.
Answer:

Option (b)

59.
What is the name of the phenomenon in which molecules of the substance are distributed (spread) in the whole part of the solid or liquid and hence it possesses homogeneous (single phase) form ?
(a) Sorption
(b) Absorption
(c) Adsorption
(d) Desorption
Answer:

Option (b)

60.
Which type of colloid is sulphur (S8) dissolution ?
(a) Associated colloid
(b) Micelle
(c) Multimolecular colloid
(d) Macromolecular colloid
Answer:

Option (c)

Showing 51 to 60 out of 203 Questions
3 4 5 6 7 8