320660
Which one is not the characteristic of chemisorption?
1 Irreversible
2 Strong adsorption by adsorption sites
3 Exothermic nature
4 Multilayer adsorption
Explanation:
Monolayer is formed during chemisorption.
CHXII05:SURFACE CHEMISTRY
320661
Physical adsorption of a gaseous species may change to chemical adsorption with ____
1 Decrease in surface area of adsorbent
2 Decrease in temperature
3 Increase in temperature
4 Increase in surface area of adsorbent
Explanation:
On increasing temperature physisorption changes to chemisorption. As temperature increases, energy of activation of adsorbate particle increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY
320662
Chromatographic analysis finds a number of applications in analytical and industrial fields, based on the principle of
1 Chemical adsorption
2 Physical adsorption
3 Hydrogen bonding
4 Sedimentation
Explanation:
Physical adsorption
CHXII05:SURFACE CHEMISTRY
320663
In "lake-test" of ion, there is formation of coloured floating lake. It is due to
320660
Which one is not the characteristic of chemisorption?
1 Irreversible
2 Strong adsorption by adsorption sites
3 Exothermic nature
4 Multilayer adsorption
Explanation:
Monolayer is formed during chemisorption.
CHXII05:SURFACE CHEMISTRY
320661
Physical adsorption of a gaseous species may change to chemical adsorption with ____
1 Decrease in surface area of adsorbent
2 Decrease in temperature
3 Increase in temperature
4 Increase in surface area of adsorbent
Explanation:
On increasing temperature physisorption changes to chemisorption. As temperature increases, energy of activation of adsorbate particle increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY
320662
Chromatographic analysis finds a number of applications in analytical and industrial fields, based on the principle of
1 Chemical adsorption
2 Physical adsorption
3 Hydrogen bonding
4 Sedimentation
Explanation:
Physical adsorption
CHXII05:SURFACE CHEMISTRY
320663
In "lake-test" of ion, there is formation of coloured floating lake. It is due to
320660
Which one is not the characteristic of chemisorption?
1 Irreversible
2 Strong adsorption by adsorption sites
3 Exothermic nature
4 Multilayer adsorption
Explanation:
Monolayer is formed during chemisorption.
CHXII05:SURFACE CHEMISTRY
320661
Physical adsorption of a gaseous species may change to chemical adsorption with ____
1 Decrease in surface area of adsorbent
2 Decrease in temperature
3 Increase in temperature
4 Increase in surface area of adsorbent
Explanation:
On increasing temperature physisorption changes to chemisorption. As temperature increases, energy of activation of adsorbate particle increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY
320662
Chromatographic analysis finds a number of applications in analytical and industrial fields, based on the principle of
1 Chemical adsorption
2 Physical adsorption
3 Hydrogen bonding
4 Sedimentation
Explanation:
Physical adsorption
CHXII05:SURFACE CHEMISTRY
320663
In "lake-test" of ion, there is formation of coloured floating lake. It is due to
320660
Which one is not the characteristic of chemisorption?
1 Irreversible
2 Strong adsorption by adsorption sites
3 Exothermic nature
4 Multilayer adsorption
Explanation:
Monolayer is formed during chemisorption.
CHXII05:SURFACE CHEMISTRY
320661
Physical adsorption of a gaseous species may change to chemical adsorption with ____
1 Decrease in surface area of adsorbent
2 Decrease in temperature
3 Increase in temperature
4 Increase in surface area of adsorbent
Explanation:
On increasing temperature physisorption changes to chemisorption. As temperature increases, energy of activation of adsorbate particle increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
NCERT Exemplar
CHXII05:SURFACE CHEMISTRY
320662
Chromatographic analysis finds a number of applications in analytical and industrial fields, based on the principle of
1 Chemical adsorption
2 Physical adsorption
3 Hydrogen bonding
4 Sedimentation
Explanation:
Physical adsorption
CHXII05:SURFACE CHEMISTRY
320663
In "lake-test" of ion, there is formation of coloured floating lake. It is due to
