GK
BASIC GENERAL KNOWLEDGE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the density of milk remains unchanged
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it becomes more viscous
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the density of milk increases
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the density of milk decreases
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Detailed explanation-1: -The cream has lower density compared to milk. Hence, it can be separated from milk due to centrifugal force. When the mixture is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay on top. This way, cream can be collected in a seperate vessel.
Detailed explanation-2: -Milk density is dependent on milk fat and SNF content; therefore, the variation in total solids content also impacts milk density, increasing in the autumn season with increasing lactose and total solids contents of milk.
Detailed explanation-3: -Demulsification is the process of separation of an emulsion into its constituent liquids. It can be bought about by heating, freezing and centrifugal action. For example, cream is separated from milk by centrifugation.
Detailed explanation-4: -Cream is essentially butterfat suspended in the more watery milk around it. We think of Cream as being “heavier” than milk because mentally we think about what the fat content can do to us, but it is actually lighter than milk, which is why Cream will rise to the top.