Multiple choice

“Iron, copper and gold appear different but still have similarities”. This statement is justified by which of the following statements?

  1. They are metallic and lustrous.

  2. They act as insulators.

  3. They are soluble in water.

  4. They are transparent objects.
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A Correct answer
Explanation

Iron, copper and gold are metals, all of which have a lustrous surface. Metals are good conductors of heat and electricity and are opaque. 

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