Assertion : Physical adsorption of molecules on the surface requires activation energy.
Reason : The bonds of adsorbed molecules are broken.

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

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Assertion is correct but reason is incorrect

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Assertion is incorrect but reason is correct

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Both Assertion and Reason are incorrect

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Solution

The correct option is E Both Assertion and Reason are incorrect
No appreciable activation energy is needed for physical adsorption of molecules on the surface. Enthalpy of chemisorption is high as it involves chemical bond formation. No bonds are broken between adsorbed molecules.
Therefore, both assertion and reason are incorrect.

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Similar questions

Assertion (A) All collision of reactant molecules lead to product formation.

Reason (R) Only those collisions in which molecules have correct orientation and sufficient kinetic energy lead to compound formation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

Assertion (A) The enthalpy of reaction remains constant in the presence of a catalyst.

Reason (R) A catalyst participating in the reaction forms different activated complex and lowers down the activation energy but the difference in enrgy of reactant and product remains the same.

Assertion: All the points (1, 0), (-1, 0), (2, 0) and (5, 0) lie on the x – axis.
Reason: Equation of the x-axis is y = 0

Choose the correct option.

Assertion (A) Order and molecularity are same.

Reason (R) Order is determined experimentally and molecularity is the sum of the stoichimetric coeffcient of rate determining elementary step.

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Assertion : Physical adsorption of molecules on the surface requires activation energy.Reason : The bonds of adsorbed molecules are broken.

Assertion : Physical adsorption of molecules on the surface requires activation energy.
Reason : The bonds of adsorbed molecules are broken.