Railway Recruitment Board General Awareness — Question 1649
Question
Pasteurisation of milk involves:
- cooling the milk below 10 degrees C
- heating the milk to above 62 degrees C and then rapidly cooling it
- boiling the milk continuously at 100 degrees C
- adding chemical preservatives to the milk
Correct answer
B — heating the milk to above 62 degrees C and then rapidly cooling it
Explanation (English)
In pasteurisation milk is heated to about 63 degrees C (above 62 degrees C) for a set time and then rapidly cooled to kill pathogens.
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