Adsorption
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CHXII05:SURFACE CHEMISTRY

320651 Which of the following statements is not correct?

1 Physical adsorption is due to van der Waal's forces
2 Chemical adsorption decreases at high temperature and low pressure
3 Physical adsorption is reversible
4 Adsorption energy for a chemical adsorption is generally greater than that of physical adsorption
CHXII05:SURFACE CHEMISTRY

320652 Which of the following statement is not applicable to chemisorption?

1 It is slow
2 It is irreversible
3 It is highly specific
4 It is independent of temperature
CHXII05:SURFACE CHEMISTRY

320653 Which of the following is correct about the adsorption of\({\text{ }}{{\text{N}}_{\text{2}}}\) over iron?

1 \({{\rm{N}}_{\rm{2}}}\) is never adsorbed over iron
2 It is always chemically adsorbed
3 Extent of adsorption over iron decreases with the increase in temperature first and then increases
4 It is always physically adsorbed
CHXII05:SURFACE CHEMISTRY

320654 Which of the following gas molecules have maximum value of enthalpy of physisorption?

1 \(\mathrm{C}_{2} \mathrm{H}_{6}\)
2 \(\mathrm{Ne}\)
3 \(\mathrm{H}_{2} \mathrm{O}\)
4 \(\mathrm{H}_{2}\)
CHXII05:SURFACE CHEMISTRY

320655 The heat evolved in chemisorption lies in the range (in \(\mathrm{kJ} / \mathrm{mol}\) ) of:

1 80 to 240
2 20 to 40
3 40 to 80
4 20 to 100
NEET DIGITAL LIBRARY
CHXII05:SURFACE CHEMISTRY

320651 Which of the following statements is not correct?

1 Physical adsorption is due to van der Waal's forces
2 Chemical adsorption decreases at high temperature and low pressure
3 Physical adsorption is reversible
4 Adsorption energy for a chemical adsorption is generally greater than that of physical adsorption
CHXII05:SURFACE CHEMISTRY

320652 Which of the following statement is not applicable to chemisorption?

1 It is slow
2 It is irreversible
3 It is highly specific
4 It is independent of temperature
CHXII05:SURFACE CHEMISTRY

320653 Which of the following is correct about the adsorption of\({\text{ }}{{\text{N}}_{\text{2}}}\) over iron?

1 \({{\rm{N}}_{\rm{2}}}\) is never adsorbed over iron
2 It is always chemically adsorbed
3 Extent of adsorption over iron decreases with the increase in temperature first and then increases
4 It is always physically adsorbed
CHXII05:SURFACE CHEMISTRY

320654 Which of the following gas molecules have maximum value of enthalpy of physisorption?

1 \(\mathrm{C}_{2} \mathrm{H}_{6}\)
2 \(\mathrm{Ne}\)
3 \(\mathrm{H}_{2} \mathrm{O}\)
4 \(\mathrm{H}_{2}\)
CHXII05:SURFACE CHEMISTRY

320655 The heat evolved in chemisorption lies in the range (in \(\mathrm{kJ} / \mathrm{mol}\) ) of:

1 80 to 240
2 20 to 40
3 40 to 80
4 20 to 100
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CHXII05:SURFACE CHEMISTRY

320651 Which of the following statements is not correct?

1 Physical adsorption is due to van der Waal's forces
2 Chemical adsorption decreases at high temperature and low pressure
3 Physical adsorption is reversible
4 Adsorption energy for a chemical adsorption is generally greater than that of physical adsorption
CHXII05:SURFACE CHEMISTRY

320652 Which of the following statement is not applicable to chemisorption?

1 It is slow
2 It is irreversible
3 It is highly specific
4 It is independent of temperature
CHXII05:SURFACE CHEMISTRY

320653 Which of the following is correct about the adsorption of\({\text{ }}{{\text{N}}_{\text{2}}}\) over iron?

1 \({{\rm{N}}_{\rm{2}}}\) is never adsorbed over iron
2 It is always chemically adsorbed
3 Extent of adsorption over iron decreases with the increase in temperature first and then increases
4 It is always physically adsorbed
CHXII05:SURFACE CHEMISTRY

320654 Which of the following gas molecules have maximum value of enthalpy of physisorption?

1 \(\mathrm{C}_{2} \mathrm{H}_{6}\)
2 \(\mathrm{Ne}\)
3 \(\mathrm{H}_{2} \mathrm{O}\)
4 \(\mathrm{H}_{2}\)
CHXII05:SURFACE CHEMISTRY

320655 The heat evolved in chemisorption lies in the range (in \(\mathrm{kJ} / \mathrm{mol}\) ) of:

1 80 to 240
2 20 to 40
3 40 to 80
4 20 to 100
For More Updates join with Us
CHXII05:SURFACE CHEMISTRY

320651 Which of the following statements is not correct?

1 Physical adsorption is due to van der Waal's forces
2 Chemical adsorption decreases at high temperature and low pressure
3 Physical adsorption is reversible
4 Adsorption energy for a chemical adsorption is generally greater than that of physical adsorption
CHXII05:SURFACE CHEMISTRY

320652 Which of the following statement is not applicable to chemisorption?

1 It is slow
2 It is irreversible
3 It is highly specific
4 It is independent of temperature
CHXII05:SURFACE CHEMISTRY

320653 Which of the following is correct about the adsorption of\({\text{ }}{{\text{N}}_{\text{2}}}\) over iron?

1 \({{\rm{N}}_{\rm{2}}}\) is never adsorbed over iron
2 It is always chemically adsorbed
3 Extent of adsorption over iron decreases with the increase in temperature first and then increases
4 It is always physically adsorbed
CHXII05:SURFACE CHEMISTRY

320654 Which of the following gas molecules have maximum value of enthalpy of physisorption?

1 \(\mathrm{C}_{2} \mathrm{H}_{6}\)
2 \(\mathrm{Ne}\)
3 \(\mathrm{H}_{2} \mathrm{O}\)
4 \(\mathrm{H}_{2}\)
CHXII05:SURFACE CHEMISTRY

320655 The heat evolved in chemisorption lies in the range (in \(\mathrm{kJ} / \mathrm{mol}\) ) of:

1 80 to 240
2 20 to 40
3 40 to 80
4 20 to 100
NEET DIGITAL LIBRARY
CHXII05:SURFACE CHEMISTRY

320651 Which of the following statements is not correct?

1 Physical adsorption is due to van der Waal's forces
2 Chemical adsorption decreases at high temperature and low pressure
3 Physical adsorption is reversible
4 Adsorption energy for a chemical adsorption is generally greater than that of physical adsorption
CHXII05:SURFACE CHEMISTRY

320652 Which of the following statement is not applicable to chemisorption?

1 It is slow
2 It is irreversible
3 It is highly specific
4 It is independent of temperature
CHXII05:SURFACE CHEMISTRY

320653 Which of the following is correct about the adsorption of\({\text{ }}{{\text{N}}_{\text{2}}}\) over iron?

1 \({{\rm{N}}_{\rm{2}}}\) is never adsorbed over iron
2 It is always chemically adsorbed
3 Extent of adsorption over iron decreases with the increase in temperature first and then increases
4 It is always physically adsorbed
CHXII05:SURFACE CHEMISTRY

320654 Which of the following gas molecules have maximum value of enthalpy of physisorption?

1 \(\mathrm{C}_{2} \mathrm{H}_{6}\)
2 \(\mathrm{Ne}\)
3 \(\mathrm{H}_{2} \mathrm{O}\)
4 \(\mathrm{H}_{2}\)
CHXII05:SURFACE CHEMISTRY

320655 The heat evolved in chemisorption lies in the range (in \(\mathrm{kJ} / \mathrm{mol}\) ) of:

1 80 to 240
2 20 to 40
3 40 to 80
4 20 to 100