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Potash fertiliser is most commonly supplied as

  • A.potassium chloride, the muriate
  • B.potassium nitrate in crystals
  • C.potassium hydroxide in flake
  • D.potassium carbonate in powder

Answer: A

It is mined or recovered from brines and needs little processing beyond beneficiation. Potassium sulphate is used where the chloride would harm a sensitive crop such as tobacco or certain fruits. Beneficiation removes the accompanying sodium salts.

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