Question : Pasteurisation of milk means--
Option 1: Heating of milk to above 720C
Option 2: Heating of milk to above 620C
Option 3: Cooling of milk to about 620C
Option 4: Cooling of milk to about 100C
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Correct Answer: Heating of milk to above 62 0 C
Solution : The correct option is heating of milk to above 62 0 C.
Pasteurisation involves heating milk to temperatures above 62°C (about 143.6°F), a method known as "high-temperature short-time" (HTST) pasteurisation. Milk is rapidly heated to a temperature exceeding 62°C for a short period of time (typically approximately 15 seconds) and then immediately cooled. This method makes milk safer to consume by lowering the possibility of bacterial contamination, prolonging shelf life, and preserving flavour and important nutrients.
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