Aluminium is a good roofing material because it

  • A is strong and does not conduct heat and electricity
  • B readily absorbs light
  • C forms an oxide film over its surface which prevents corrosion
  • D is flexible and can conduct heat

The correct answer is C. forms an oxide film over its surface which prevents corrosion

The thin coat of aluminum oxide formed prevents further attack of the metal by atmospheric oxygen and water.

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