Post-UTME Chemistry 2013 Objective — Question 13

Question 13 of 22 from the Post-UTME Screening (Post-UTME) Chemistry 2013 Objective paper, with the correct answer and a full explanation.

Which of the following physical processes cannot be explained by the molecular theory of matter?

A. evaporation
B. thermal conduction
C. radiation of heatCorrect
D. convectional current in fluids

Explanation

Radiation of heat is energy transfer via electromagnetic waves, which does not require molecules/a medium, unlike the other processes listed. (No printed answer key for this session; answer worked out independently.)

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