When a solid substance disappears completely as a gas on heating; the substance is said to have undergone? by Sunday | Mar 19 | Chemistry JAMB | 0 comments A. Sublimation B. Crystallization C. Distillation D. Evaporation Correct Answer: Option A – Sublimation Users Also Read These:On heating, the following trioxocarbonate (IV) salts…A hydrogen chloride gas reacted with oxygen gas to…A 90W immersion heater is used to supply energy for…An unproductive animal completely removed from the…When a solid substance disappears completely as a…