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SSC Selection Post 2022 PYQ — Question 44

SSC Selection Post - Higher Secondary Level - 01 Aug 2022 - Shift 3 • General Awareness • Q44

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At what temperature is milk boiled for 15 to 30 seconds in the pasteurisation process?

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Correct answer: A

Explanation

The correct answer is option 1 i.e. 72o C.

  • In the pasteurisation process, especially the High Temperature Short Time (HTST) method, milk is heated to 72°C for 15 to 30 seconds and then rapidly cooled.
  • This temperature is sufficient to kill harmful bacteria such as Salmonella and Listeria, while retaining the nutritional quality and taste of the milk.
  • Pasteurisation helps to extend shelf life and ensure safety for consumption without significantly altering its properties.
  • The process is widely used in the dairy industry and named after Louis Pasteur, who discovered it.