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Q: Which of the following is not a chemical change?
  • A. Fuel combustion
  • B. Electrolysis of acidic water
  • C. Oxidation / rusting of iron
  • D. Glowing of a platinum wire
Correct Answer: Option D - Electrolysis of acidic water is a chemical change as well as fuel combustion, oxidation and rusting of iron, but glowing of platinum wire is a physical change.
D. Electrolysis of acidic water is a chemical change as well as fuel combustion, oxidation and rusting of iron, but glowing of platinum wire is a physical change.

Explanations:

Electrolysis of acidic water is a chemical change as well as fuel combustion, oxidation and rusting of iron, but glowing of platinum wire is a physical change.