Surface Chemistry Part - 1
Quiz
•
Chemistry
•
12th Grade
•
Easy
Rahul NOIDA
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10 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following process does not occur at the interface of phases?
crystallisation
heterogenous catalysis
homogeneous catalysis
corrosion
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
At the equilibrium position in the process of adsorption ___________.
H > 0
H = T S
H > T S
H < T S
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The term ‘sorption’ stands for ____________.
(i) absorption
(ii) adsorption
(iii) both absorption and adsorption
(iv) desorption
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Extent of physisorption of a gas increases with ___________.
(i) increase in temperature.
(ii) decrease in temperature.
(iii) decrease in surface area of adsorbent.
(iv) decrease in strength of van der Waals forces.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is not a favourable condition for physical adsorption?
high pressure
negative H
higher critical temperature of adsorbate
high temperature
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Physical adsorption of a gaseous species may change to chemical adsorption with ______________.
decrease in temperature
increase in temperature
increase in surface area of adsorbent
decrease in surface area of adsorbent
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is an example of absorption?
Water on silica gel
Water on calcium chloride
Hydrogen on finely divided nickel
Oxygen on metal surface
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