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Saturday, 31 October

JEE Main 2020 · ChemistryMultiple choiceAssertion–reasonMediumConceptual

JEE Main 8 January 2020, Shift 2, Chemistry Q26

Question 26 of 75 in this shift, Chemistry question 1 of 25, Section A.

For the following Assertion and Reason, the correct option is : Assertion : For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7 - 9 elements. Reason : The reactants are most strongly adsorbed on group 7 - 9 elements.
  1. (1)Both assertion and reason are true and the reason is the correct explanation for the assertion.
  2. (2)Both assertion and reason are true but the reason is not the correct explanation for the assertion.
  3. (3)The assertion is true, but the reason is false.Official answer
  4. (4)Both assertion and reason are false.

Official answer

Option 3

NTA final key (Jan 2020).

Chapter
Surface Chemistry
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.