Given below are two statements :
Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II :For stabilisation of an emulsion, excess of electrolyte is added.
In the light of the above statements, choose the most appropriate answer from the options
given below :
Statement I : Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
Statement II :For stabilisation of an emulsion, excess of electrolyte is added.
In the light of the above statements, choose the most appropriate answer from the options
given below :
- (A)Both Statement I and Statement II are correct.
- (B)Both Statement I and Statement II are incorrect.
- (C)Statement I is correct but Statement II is incorrect.✓ Correct
- (D)Statement I is incorrect but Statement II is correct.
Answer: (C)
Solution
Statement I is correct: emulsions are inherently unstable colloidal systems and can separate into two layers over time. Statement II is incorrect: emulsions are stabilized by emulsifying agents (proteins, gums, soaps, surfactants), not by adding excess electrolyte. Electrolytes can actually destabilize emulsions by coagulation. Answer: (C).
JEE Main · 2022 · 24 Jun 2022 · Shift 1 · Single correct option