An emulsion cannot be broken by __________ and ___________.
(i) heating
(ii) adding more amount of dispersion medium
(iii) freezing
(iv) adding emulsifying agent
The answer is the option (ii, iv) Adding more amount of dispersion medium or emulsifying agent can’t break an emulsion because addition of dispersion medium dilutes the emulsion and emulsifying agent stabilizes it. It can be broken by heating, freezing and centrifuging.