JEE Main 2022 — Surface Chemistry Question with Solution
JEE Main 2022 (24 Jun Shift 1)
Question
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 :
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
Oil and water are not soluble in each other. since oils are non-polar organic compounds and water is a polar compound. So, they will form hydrophobic type of colloid.
Hydrophobic collides are unstable and required some stabilisers like proteins, gums, natural and synthetic soaps, etc. Excess of electrolyte can not act as stabilisers.
So, statement 1 is true but statement 2 is false.
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This is a previous-year question from JEE Main 2022, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.