Surface chemistry
Quiz
•
Chemistry
•
12th Grade
•
Hard
Hari Darshan Tewari
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Extent of adsorption of adsorbate from solution phase increases with……
increase in amount of adsorbate in solution
decrease in surface area of adsorbent
increase in temperature of solution
decrease in amount of adsorbate in solution
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In Freundlich adsorption isotherm x/m = Kp1/n, the value of ‘n’ at low pressure is
more than one.
less than one.
equal to one.
from zero to one.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to adsorption theory of catalysis, the speed of the reaction increases because
The concentration of the reactant molecules at the active centres of the catalyst becomes high due to adsorption.
in the process of adsorption, the activation energy of the molecules becomes large.
adsorption produces heat which increases the speed of the reaction
adsorption lowers the activation energy of the reaction.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which shape selective catalyst is used to convert alcohol to gasoline?
Trpsin
Calgon
ZSM-5
Zeigler-Natta catalyst
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When a small amount of FeCl3 is added to a freshly precipitated Fe(OH)3, b reddish brown colloidal solution is obtained. This phenomenon is known as
dialysis
peptization
protection
dissolution
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