Surface Chemistry - Topic Wise Multiple Choice Questions (MCQ)
1 )
Which of the following is good adsorbent?
Silica gel
Alumina
Clay
All the given ✔
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2 )
At which temperature chemical adsorption occurs?
At high temperature ✔
At very low temperature
At low temperature
Temperature does not affect
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3 )
Which adsorbent is used in separation of inert gases by Dewar’s method?
Vanadium pentoxide
Silica gel
Activated charcoal ✔
Allumina
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4 )
If H2,CH4,CO2 and NH3 gases are adsorbed by 1 gram charcol at 290 k temperature than deceasing order of their volume is
H2>CH4>CO2>NH3
CO2>NH3>H2>CH4
NH3>CO2>CH4>H2 ✔
CH4>CO2>NH3>H2
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5 )
Which gaseous molecule has highest value of physical adsorption enthalpy?
H2
N2
H2O ✔
He
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