Which statements are correct ?

i) physical adsorption is due to Vander Waal’s forces

ii) physical adsorption decreases at high temperature

iii) physical adsorption is irreversible

iv) enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

i, ii & iv

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i, ii & iii

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i, ii

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i& iv

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Solution

The correct option is C
i, ii

Physical adsorption is reversible in nature & enthalpy for a chemical adsorption is higher than that of physical adsorption

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Similar questions

Which statement is/are correct?

i) Physical adsorption is due to Van der Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

Which statement is/are correct?

i) Physical adsorption is due to Vander Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

Which statement is/are correct?

i) Physical adsorption is due to Vander Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

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