Question

Find the odd one out
Select one:
a. Hardness
b. Corrosion
c. Stiffness
d. Rigidity​

Answer 1

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b. Corrosion

Because hardness, stiffness and rigidity are physical state while corrosion is the chemical state.

Answer 2

Answer:

Corrosion

Because hardness, stiffness and rigidity are physical state while corrosion is the chemical state