Chemistry · PYQ NEET UG 2023
हिन्दीGiven below are two statements : one is labelled as Assertion A and the other is labelled as Reason R : \n Assertion A : A reaction can have zero activation energy.\nReasons R : The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.\nIn the light of the above statements, choose the correct answer from the options given below :
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Correct answer · Option B
Both A and R are true and R is NOT the correct explanation of A.
Explanation
Some radical combinations have zero activation energy (Assertion A is true). The definition of activation energy given in Reason R is also correct, but R does not explain why activation energy can be zero.