Assertion :Catalyst is a substance which takes part in a chemical reaction, undergoes chemical change and alters the rate of a reaction Reason: Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction

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

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Both Assertion and Reason are correct but Reason is not the correct explanation for 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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Solution

The correct option is D Assertion is incorrect but Reason is correct
Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction or alters the rate of a reaction.

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Similar questions

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.

(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) 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 (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

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.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

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Assertion :Catalyst is a substance which takes part in a chemical reaction, undergoes chemical change and alters the rate of a reaction Reason: Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction

The correct option is D Assertion is incorrect but Reason is correctCatalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction or alters the rate of a reaction.

The correct option is D Assertion is incorrect but Reason is correct
Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction or alters the rate of a reaction.