JEE Main levelSingle correct optionDifficulty 2 of 3sc185
Which of the following would NOT help in breaking (demulsifying) an emulsion?
AAdding more of the emulsifying agent
BCentrifugation
CFreezing followed by thawing
DHeating
Answer: A
Centrifugation, freezing and heating break the protective film or force the droplets to coalesce. Adding more emulsifier thickens the stabilising film and makes the emulsion more stable.