JAMB Chemistry 2023 Objective — Question 33
Question 33 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2023 Objective paper, with the correct answer and a full explanation.
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A substance that absorbs water when exposed to the atmosphere to become ultimately wet or sticky is
- A. Hygroscopic
- B. DeliquescentCorrect
- C. Efflorescent
- D. Desiccant
Explanation
Deliquescent substances absorb water from the air until they dissolve (e.g. NaOH, CaCl₂). Hygroscopic substances absorb moisture but don't fully dissolve. Efflorescent substances lose water of crystallisation.
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