Question:
Cream separation from milk is which type of separation?
Cream separation from milk is which type of separation?
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Centrifugal force accelerates the buoyant separation of lighter fat globules from heavier skim milk serum according to Stokes' law.
Updated On: Sep 15, 2026
- Solvent Extraction
- Centrifugation
- Filtration
- Osmosis
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Separation of fat from milk is a density-differential liquid-liquid separation process governed by Stokes' Law.
Step 2: Detailed Explanation:
Milk fat globules have a lower density ($\approx 0.93\,\text{g/cm}^3$) than the surrounding aqueous skim milk serum ($\approx 1.036\,\text{g/cm}^3$).
In industrial dairy processing, continuous disc-stack centrifugal separators apply high centrifugal acceleration ($5000\text{--}7000\times g$), accelerating the inward radial migration of fat globules to discharge separated cream.
Step 3: Final Answer:
Thus, cream separation is a centrifugation process.
Separation of fat from milk is a density-differential liquid-liquid separation process governed by Stokes' Law.
Step 2: Detailed Explanation:
Milk fat globules have a lower density ($\approx 0.93\,\text{g/cm}^3$) than the surrounding aqueous skim milk serum ($\approx 1.036\,\text{g/cm}^3$).
In industrial dairy processing, continuous disc-stack centrifugal separators apply high centrifugal acceleration ($5000\text{--}7000\times g$), accelerating the inward radial migration of fat globules to discharge separated cream.
Step 3: Final Answer:
Thus, cream separation is a centrifugation process.
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