Multiple choice

When milk is churned, cream is separated due to

  1. gravitational force

  2. centrifugal force

  3. frictional force

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When milk is churned, centrifugal force causes the lighter cream (fat) to separate from the denser skim milk. The spinning motion pushes the heavier milk outward while the lighter cream collects, allowing it to be removed - this is the same principle used in mechanical cream separators.

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