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Assertion (A) : V(2)O(5) catalyst is use...

Assertion (A) : `V_(2)O_(5)` catalyst is used in Haber's process for the manufacture of ammonia.
Reason (R) : The principal oxidation state for lanthanoids is +3 although +2 and +4 oxidation states are also exhibited.

A

Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).

B

Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).

C

Assertion (A) is correct, but Reason (R) is incorrect statement.

D

Assertion (A) is incorrect, but Reason (R) is correct statement.

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • The most stable +2 oxidation state is exhibited by

    A
    Ge
    B
    Sn
    C
    Pb
    D
    Si

  • Although +3 is the characteristic oxidation state for lanthanoids but cerium also shows +4 oxidation state because

    A
    it has variable ionisation enthalpy
    B
    it has a tendency to attain noble gas configuration
    C
    it has a tendency to attain `f^(0)` configuration
    D
    it resembles `Pb^(4+)`

  • The oxidation state of O in Na_2O_2 is

    A
    `+2`
    B
    -2
    C
    -1
    D
    `+1`

    • Similar Questions

    Explore conceptually related problems

    Although +3 oxidation state is the characteristic oxidation state of lanthanoids but cerium shows +4 oxidation state also. Why?

    Although +3 oxidation state is the characteristic oxidation state of lanthanoids but cerium shows +4 oxidation state also. Why ?

    Although +3 oxidation stae is thje characteristic oxidation state of lanthanoids but cerium shows +4 oxidation state also. Why ?

    In N_2O_4 oxidation state of nitrogen is

    The oxidation state of 'O' in O_(2) is

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