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Partial sterilization of a product such as milk at a high temperature is known as:

  • A.Pasteurization
  • B.Filtration
  • C.Pickling
  • D.Refrigeration

Answer: A

Correct answer: Pasteurization

Pasteurisation heats milk briefly - about 72°C for 15 seconds, then rapid cooling - which kills the pathogens and most spoilage organisms without curdling the milk or spoiling its flavour. It is partial sterilisation: some harmless organisms survive, which is why pasteurised milk still needs refrigeration.

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