JAMB Chemistry 2023 Objective — Question 39
Question 39 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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Which of the following statements about thermoplastic material is correct?
- A. They do not melt on heating
- B. They melt on heating
- C. They soften and melt on heatingCorrect
- D. They decompose on heating
Explanation
Thermoplastics soften and melt on heating (allowing reshaping), then harden on cooling. This is reversible. Thermosets do not soften on heating — they char or decompose.
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