NEET levelSingle correct optionDifficulty 1 of 3sc174
Which of the following can act as an emulsifying agent to stabilise an oil-in-water emulsion?
ASodium chloride
BSodium stearate (soap)
CGlucose
DPure distilled water
Answer: B
An emulsifier has a hydrophilic part and a hydrocarbon part and adsorbs at the oil-water interface, preventing droplets from coalescing. Soap (sodium stearate) does this. NaCl, glucose and water do not form an interfacial film.