NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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A clock spring is heated to a high temperature and then suddenly plunged into cold water. This treatment will cause the metal to become:

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Correct option: C

Hard and brittle (case hardening)

Heating a clock spring to a high temperature and then suddenly plunging it into cold water causes the metal to become hard and brittle due to case hardening.

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