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Assertion : Fe(3)O(4) is paramagnetic at...

Assertion : `Fe_(3)O_(4)` is paramagnetic at room temperature and becomes ferromagnetic at `850 K`
Reason : The randomization of spin takes place with temperature.

A

If both the assertion and reason are ture but the reason is a true explanation of the assertion.

B

If both the assertion and reason are true but the reason is not the correct explanation of the assertion

C

If the assertion is true but reason is false

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
`Fe_(3) O_(4)` is ferromagnetic at room temperature and becomes paramagnetic at `850K` due to randomization of spin wit temperature.
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