Home JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-4 Assertion: It has been found that for hydrog…
JEE Main - Previous Year Papers JEE MAIN 2020 PAPER-4 Single Correct MCQ
Published on: August 12, 2026

Assertion: It has been found that for hydrogenation reaction the catalytic activity increases from group- 5 to group-11 metals with maximum activity being shown by group 7-9 elements of the periodic table.

Reason: For 7-9 group elements adsorption rate is maximum.

A
Both assertion and reason are correct and reason is correct explanation of assertion.
B
Both assertion and reason are correct and reason is not correct explanation of assertion.
C
Assertion is true & reason is false.
D
Both are incorrect

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Text Solution

Verified by Experts
The correct answer is:
A

Group 7-9 elements of the periodic table show variable valencies so they have maximum activity because of the increase in adsorption rate.

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