Adsorption
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CHXII05:SURFACE CHEMISTRY

320639 Taking up of impurities by charcoal is

1 Absorption
2 Physical adsorption
3 Chemisorption
4 Desorption
CHXII05:SURFACE CHEMISTRY

320640 Which of the following statements is incorrect w.r.t physisorption?

1 The forces involved are van der Waals' forces.
2 More easily liquifiable gases are adsorbed easily
3 Under high pressure it results into multimolecular layer on adsorbent surface
4 \(\Delta \mathrm{H}_{\text {adsorption }}\) is low and \(+\mathrm{ve}\)
CHXII05:SURFACE CHEMISTRY

320641 Which one of the following is not a property of physical adsorption?

1 Higher the pressure, more is the adsorption
2 Greater the surface area, more is the adsorption
3 Lower the temparature, more is the adsorption
4 Unilayer adsorption occurs
JEE - 2018
CHXII05:SURFACE CHEMISTRY

320642 Rate of chemical adsorption increases with

1 decrease in temperature
2 decrease in pressure
3 increase in temperature
4 decrease in surface area
KCET - 2009
NEET DIGITAL LIBRARY
CHXII05:SURFACE CHEMISTRY

320639 Taking up of impurities by charcoal is

1 Absorption
2 Physical adsorption
3 Chemisorption
4 Desorption
CHXII05:SURFACE CHEMISTRY

320640 Which of the following statements is incorrect w.r.t physisorption?

1 The forces involved are van der Waals' forces.
2 More easily liquifiable gases are adsorbed easily
3 Under high pressure it results into multimolecular layer on adsorbent surface
4 \(\Delta \mathrm{H}_{\text {adsorption }}\) is low and \(+\mathrm{ve}\)
CHXII05:SURFACE CHEMISTRY

320641 Which one of the following is not a property of physical adsorption?

1 Higher the pressure, more is the adsorption
2 Greater the surface area, more is the adsorption
3 Lower the temparature, more is the adsorption
4 Unilayer adsorption occurs
JEE - 2018
CHXII05:SURFACE CHEMISTRY

320642 Rate of chemical adsorption increases with

1 decrease in temperature
2 decrease in pressure
3 increase in temperature
4 decrease in surface area
KCET - 2009
Join With Us for More Updates
CHXII05:SURFACE CHEMISTRY

320639 Taking up of impurities by charcoal is

1 Absorption
2 Physical adsorption
3 Chemisorption
4 Desorption
CHXII05:SURFACE CHEMISTRY

320640 Which of the following statements is incorrect w.r.t physisorption?

1 The forces involved are van der Waals' forces.
2 More easily liquifiable gases are adsorbed easily
3 Under high pressure it results into multimolecular layer on adsorbent surface
4 \(\Delta \mathrm{H}_{\text {adsorption }}\) is low and \(+\mathrm{ve}\)
CHXII05:SURFACE CHEMISTRY

320641 Which one of the following is not a property of physical adsorption?

1 Higher the pressure, more is the adsorption
2 Greater the surface area, more is the adsorption
3 Lower the temparature, more is the adsorption
4 Unilayer adsorption occurs
JEE - 2018
CHXII05:SURFACE CHEMISTRY

320642 Rate of chemical adsorption increases with

1 decrease in temperature
2 decrease in pressure
3 increase in temperature
4 decrease in surface area
KCET - 2009
For More Updates join with Us
CHXII05:SURFACE CHEMISTRY

320639 Taking up of impurities by charcoal is

1 Absorption
2 Physical adsorption
3 Chemisorption
4 Desorption
CHXII05:SURFACE CHEMISTRY

320640 Which of the following statements is incorrect w.r.t physisorption?

1 The forces involved are van der Waals' forces.
2 More easily liquifiable gases are adsorbed easily
3 Under high pressure it results into multimolecular layer on adsorbent surface
4 \(\Delta \mathrm{H}_{\text {adsorption }}\) is low and \(+\mathrm{ve}\)
CHXII05:SURFACE CHEMISTRY

320641 Which one of the following is not a property of physical adsorption?

1 Higher the pressure, more is the adsorption
2 Greater the surface area, more is the adsorption
3 Lower the temparature, more is the adsorption
4 Unilayer adsorption occurs
JEE - 2018
CHXII05:SURFACE CHEMISTRY

320642 Rate of chemical adsorption increases with

1 decrease in temperature
2 decrease in pressure
3 increase in temperature
4 decrease in surface area
KCET - 2009