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Eamcet Chemistry
2 nd Year : Unit 1.2 ( Solid State ) - Solid State – II

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Assertion (A): Fe₃O₄ is ferrimagnetic at room temperature but becomes paramagnetic at 850 K.
Reason (R): The magnetic moments in are aligned equally in parallel and antiparallel directions which on heating randomise.

A. Both (A) and (R) are true and (R) is the correct explanation of (A)

B. Both (A) and (R) are true but (R) is not the correct explanation of (A)

C. (A) is true but (R) is false

D. Both (A) and (R) are false

E. None of the above

View Answer

Correct choice: A

Explanation:

None

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Eamcet Chemistry 2 nd Year : Unit 1.2 ( Solid State ) - Solid State – II

Eamcet Chemistry
2 nd Year : Unit 1.2 ( Solid State ) - Solid State – II