Commodity Fumigation License Practice Exam

What should the gas introduction line feel like after beginning to introduce the fumigant?

1. Cold

2. Warm

3. Hot

4. Cool

The correct answer is: Hot

The gas introduction line should feel warm after the fumigant is introduced. This warmth indicates that the fumigant is in a gaseous state and is effectively being distributed through the line into the space being fumigated. When a fumigant is introduced, it typically undergoes a phase change from liquid to gas, which can generate some heat during the process. This is a result of the fumigant absorbing heat from the surroundings as it vaporizes. If the line feels cold, it could suggest that the fumigant is not vaporizing properly or that there is an issue with the introduction process. On the other hand, if the line feels hot, that might indicate an excessive buildup of pressure or heat, which could point to a malfunction or potentially dangerous situation. Therefore, a warm feel from the gas introduction line is the desired state, indicating that the fumigant is being effectively introduced and is within the proper temperature range for effective fumigation.