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Question

Identify the physical property that can help to check the purity of a substance.


  1. Melting and boiling point

  2. Atmospheric pressure 

  3. Homogeneity

  4. Both Atmosphericpressure and Homogeneity


Solution

The correct option is A

Melting and boiling point


A pure substance has a fixed melting point or boiling point at constant pressure. The purity of a substance can be tested by checking its melting or boiling point. If a substance is impure, its melting and boiling point will change.

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