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JEE Main 2025 Jan 28 Shift 2, Chemistry Q6: Purification Methods

JEE Main2025Jan 28, Shift 2Chemistry
Q.

The purification method based on the following physical transformation is :

  1. A

    Sublimation

  2. B

    Distillation

  3. C

    Crystallization

  4. D

    Extraction

Solution

The process shown converts a solid directly into vapour upon heating and then back into a solid upon cooling, with no liquid phase appearing. This is the definition of sublimation, and the technique that exploits it to separate a sublimable solid from a non-volatile impurity is called sublimation.

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