Question

Magnetic keepers are used to prevent the loss of magnetism due to
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Answer 1

Answer:

If a magnet is left free for a long time, it losses its magnetism due to earth's magnetic fields. The earth's magnetic field exerts a torque on individual magnetic dipoles which alters their orientation. So, magnetic keepers are used to store magnets. ... These soft iron bars are called magnetic keepers.

Answer 2

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Magnets have a tendency to lose their magnetism when their poles are left bare. This is called selfdemagnetization. Magnets are, therefore, protected by keeping them in magnetic keepers.