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In pasteurisation, milk is heated to about 70 degrees Celsius for how long before sudden chilling?

A1 to 2 days
B15 to 30 seconds
C15 to 30 minutes
D2 to 3 hours
Answer & Solution
Correct answer: B. 15 to 30 seconds
1. It kills harmful microbes. 2. Heating lasts 15 to 30 seconds. 3. Louis Pasteur discovered the process. _Source: syllabus Science, Chapter 2, Microorganisms: Friend and Foe._
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