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Model Paper 6 — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETModel Paper 64 Marks
MCQ
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion (A): A reaction cannot have zero activation energy.
Reason (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
    A is false but R is true.
  • B
    Both A and R are true and R is the correct explanation of A.
  • ✓
    Both A and R are true and R is NOT the correct explanation of A.
  • D
    A is true but R is false.
✓

Answer

Correct option: C.
Both A and R are true and R is NOT the correct explanation of A.
(C)
A reaction can have zero activation energy, for example, $CH _3+ CH _3 \rightarrow CH _3- CH _3$ has zero activation energy.

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