JEE Main 2020 — Surface Chemistry Question with Solution
From: JEE Main 2020 (Online) 8th January Evening Slot
Question
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.
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.
Choose an option
Show full solutionCorrect option: B
Correct answer
BThe assertion is true, but the reason is false.
Step-by-step explanation
Reactants must not get adsorbed so strongly
that they are immobilised and other reactants
are left with no space on the catalyst’s surface
for adsorption.
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Surface Chemistry chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2020, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.