Which of the following processes does not involve the use of limestone?

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Chemistry WAEC 2011

Which of the following processes does not involve the use of limestone?

  • Extraction of iron in the blast furnance
  • Manufacture of tetraoxosulphate (VI) acid by Contact process checkmark
  • Production of washing soda by Solvay process
  • Production of cement

The correct answer is: B

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