JEE Main 2020 · ChemistryMultiple choiceSingle correctMediumCalculation

JEE Main 8 January 2020, Shift 1, Chemistry Q27

Question 27 of 75 in this shift, Chemistry question 2 of 25, Section A.

The rate of a certain biochemical reaction at physiological temperature (T) occurs

10^6

times faster with enzyme than without. The change in the activation energy upon adding enzyme is :

(1) $-6RT$
(2) $-6(2.303)RT$ Official answer
(3) $+6RT$
(4) $+6(2.303)RT$

Official answer

Option 2

NTA final key (Jan 2020).

Chapter: Chemical Kinetics
Topic: Arrhenius Equation
Idea tested: Catalyst Effect on Arrhenius Parameters

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.