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An efflorescent compound is a substance that?

Chemistry
JAMB 1981

An efflorescent compound is a substance that?

  • A. absorbs water froom the air without dissolving in it
  • B. is capable of giving off coloured luminosity
  • C. gives out water to the atmosphere
  • D. absorbs water from the air and dissolves in it
  • E. gives out its water of crystallization on heating
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Correct Answer: Option C
Explanation

Efflorescence is a phenomenon where a crystalline salt loses all or part of its water of crystallization when exposed to the atmosphere to form a lower dehydrate or an anhydrous salt.

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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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