Which of the following changes involves a bond forming process ?

Options

A. Stretching of rubber
B. Dissolution of sugar in water
C. Rusting of iron
D. Emission of `gamma` - rays radioactive ion

Answer

C

Explanation

Rusting of iron i.e., oxiedation of iron in moist air to form ionic ferric oxide `Fe_(2)O_(3).xH_(2)O` involves formation of a bond between `Fe^(3+) and O^(-2)` ions.