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Question

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.
For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7 - 9 elements.

A
Both assertion and reason are true and the reason is not the correct explanation for the assertion.
B
Both assertion and reason are true and the reason is the correct explanation for the assertion.
C
Both assertion and reason are false.
D
Assertion is true, but reason is false.
Solution
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Correct option is D. Assertion is true, but reason is false.
For hydrogenation reactions, the catalytic activity increases from a group $$5$$ to group $$11$$ metals with maximum activity shown by group $$7-9$$ elements.

The general trend for the activity for hydrogenation increases from left to right.

In Hydrogenation reaction, catalytic activity depends on variable oxidation states as well as atomic size.
Hence, the correct answer is option $$A$$.

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Similar Questions
Q1
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.
For hydrogenation reactions, the catalytic activity increases from Group 5 to Group 11 metals with maximum activity shown by Group 7 - 9 elements.
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Q2
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
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Q3

For the following Assertion and Reason, pick the correct option

Assertion: For hydrogenation reactions, the catalytic activity increases from group-5 to group11 metals with maximum activity shown by group 7-9 elements

Reason: The reactants are most strongly adsorbed on group 7-9 elements


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Q4

For hydrogenation, catalytic activity increases from Group 5-11. It's also mentioned that the activity is maximum for groups 7-9. So, Is the activity higher in group 11 or in group 9?

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Q5
why catalytic activity increases from group 5 to group 11? (explian in detail.)
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