A mixture of sand and naphthalene can be separated by ________ ?
Correct answer: C. Sublimation
- A. Chromatography
- B. Fractional distillation
- C. Sublimation
- D. None of these
Explanation
Naphthalene sublimes directly from solid to vapour on heating, while sand does not, allowing sublimation to separate them. The naphthalene vapour can then be cooled and collected as a solid.
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