When water boilers are used for long period of time, the solid substances left behind…

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Chemistry JAMB 2005

When water boilers are used for long period of time, the solid substances left behind as scale are

  • magnesium trioxosilicate (IV) and rust checkmark
  • magnesium trioxosilicate (IV) and calcium tetraoxosulphate (VI)
  • clay and magnesium troxosulphate (IV)
  • clay and rust

The correct answer is: A

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