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Question
Pick out the correct statement.
Options:
A .  Stainless steel is nothing but chromium coated steel
B .  Hardening of a soft metal can be done by alloying it with another metal or non-metal
C .  Plastic deformation of a material is its temporary distortion under the action of applied stress
D .  Rusting of iron is not electrochemical in nature
Answer: Option B

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