Question 21

XL-PMCQ2 marksNeeds review
For product formation from only one type of reactant (e.g. A → product), the CORRECT match for the order of the reaction (given in Column I) with the half-life expression (given in Column II) is
([A]₀ is the initial concentration and kᵣ is the rate constant)
Column I: Order
Column II: Half-life expression
i. Zero
P. ln 2 / kᵣ
ii. First
Q. [A]₀ / 2kᵣ
iii. Second
R. 1 / kᵣ[A]₀

S. 2kᵣ / [A]₀
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2025XL-P

GATE XL 2025 · Paper 1

Life Sciences · Original paper archive

Section
Section XL-P
Question type
Multiple choice (MCQ)
Marks
2 marks

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