Temporary magnets retain their magnetism for a long time.

True

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False

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Solution

The correct option is B False
Materials that retain their magnetism, only for a short period of time, are termed as temporary magnets.

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Q. Assertion :Substances which at room temperature retain their ferromagnetic property for a long period of time are called permanent magnets. Reason: Permanent magnet can be made by placing a ferromagnetic rod in a solenoid and passing current through it.

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Temporary magnets retain their magnetism for a long time.

The correct option is B FalseMaterials that retain their magnetism, only for a short period of time, are termed as temporary magnets.

The correct option is B False
Materials that retain their magnetism, only for a short period of time, are termed as temporary magnets.