Question

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: A reaction can have zero activation energy.
Reasons R: The minimum extra amount of energy absorbed by reactant molecules so that their energy becomes equal to threshold value, is called activation energy.
In the light of the above statements, choose the correct answer from the options given below:

• A. Both A and R are true and R is NOT the correct explanation of A
• B. A is true but R is false
• C. A is false but R is true
• D. Both A and R are true and R is the correct explanation of A

Answer 1

Answer: (C)

A is false but R is true

Answer 2

The activation energy of a reaction cannot be 0.
$E_a$ is the smallest additional amount of energy that reactant molecules must absorb to reach the threshold value for their energy.
Therefore, The correct option is (C): A is false but R is true