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The purity of a solid sample can best be determined by its?

Chemistry
WAEC 2014

The purity of a solid sample can best be determined by its?

  • A. boiling point
  • B. melting point
  • C. conductivity
  • D. solubility
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Correct Answer: Option B
Explanation

- The presence of impurities in a substance results in a lower melting point due to a process called melting point depression.

- That implies a pure solid has a SHARP melting point which is of the standard value when compared.


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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts