Question

Cream from the milk is separated by centrifugation because:

• A. cream is lighter than milk
• B. cream is heavier than milk
• C. cream floats over milk
• D. the cream is lighter than milk and comes over it

Answer 1

The correct option is C

cream floats over milk

The cream is lighter than milk, on churning, it rises to the top and can be collected. Centrifugation works on the principle in which the denser particles are forced to the bottom and the lighter particles surface at the top when a mixture is spun rapidly.