WAEC Physics 2015 Theory — Question 13
Question 13 of 26 from the West African Examinations Council (WAEC) Physics 2015 Theory paper, with the correct answer and a full explanation.
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9(c). Explain why tomatoes keep longer when kept in a moist jute bag in a clay pot.
Model answer
The clay pot is porous, so water in the moist jute bag can seep through its pores and evaporate from the outer surface. This evaporation extracts latent heat of vaporization from the tomatoes inside, cooling them and slowing down the ripening/decay process, so they keep longer.
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