Which of the following is a chemical change?

A Conversion of water to ice

B Rusting of iron

C Crumpling a sheet of aluminum foil

D Casting silver

Correct Answer: Rusting of iron

In rusting of iron, the oxidation state of iron changes, but in the conversion of water to ice, crumpling a sheet of aluminum foil and casting silver the chemical state remains same whereas the physical state changes. When iron is exposed to oxygen, iron oxide formation takes place.

Bissoy MCQ Team

#Class 11 Chemistry #Some Basic Concepts of Chemistry

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