Which of the following properties are related for physical adsorption?
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a
Reversible
b
Formation of unimolecular layer
c
Low heat of adsorption
d
Occurs at low temperature and decreases with increasing temperature
answer is A.
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Detailed Solution
There is formation of multilayers in physical adsorption.Thus, desorption also takes place, i.e. it is reversible. This takes place at low temperature. ΔH= low and increase in temperature decreases adsorption.