The chemical used for coagulation in water purification is

  • A Aluminium tetraoxosulphate (VI)
  • B Copper tetraoxosulphate (VI)
  • C Sodium tetraoxosulphate (VI)
  • D Calcium tetraoxosulphate (VI)

The correct answer is A. Aluminium tetraoxosulphate (VI)

No explanation given
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