Chemistry · Surface Chemistry
JEE Advanced 2023 — Paper 2 — Question 27
Consider the following statements related to colloids. (I) Lyophobic colloids are not formed by simple mixing of dispersed phase and dispersion medium. (II) For emulsions, both the dispersed phase and the dispersion medium are liquid. (III) Micelles are produced by dissolving a surfactant in any solvent at any temperature. (IV) Tyndall effect can be observed from a colloidal solution with dispersed phase having the same refractive index as that of the dispersion medium.
- Option A:Correct
(I) and (II)
- Option B:
(II) and (III)
- Option C:
(III) and (IV)
- Option D:
(II) and (IV)
Answer: A
Step-by-step solution
In tyndall effect, refractive indices of dispersed phase and dispersion medium differ greatly in magnitude.
Answer key and solution verified before publishing.
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- Exam
- JEE Advanced 2023
- Paper
- Paper 2
- Subject
- Chemistry
- Chapter
- Surface Chemistry
- Topic
- Colloids, emulsion and surfactant + Miscellaneous problems