IICRC Applied Structural Drying Practice Exam 2025 - Free Practice Questions and Study Guide for Certification

To determine which day had the greatest vapor pressure differential, we must analyze the vapor pressure data for each day provided. Vapor pressure differential refers to the difference in vapor pressure between the air and a material, often measured to assess drying efficiency.

The correct choice indicates that Tuesday exhibited the highest vapor pressure differential. This could mean that on Tuesday, the conditions were such that there was a significant difference between the vapor pressures of the air compared to the materials being dried. A greater vapor pressure differential can enhance the drying rate, as it creates a stronger driving force for moisture to evaporate from the wet materials into the drier air.

Factors that might contribute to a higher vapor pressure differential include lower humidity levels or higher temperatures on Tuesday compared to the other days. By creating conditions that promote faster evaporation, Tuesday would be more effective for drying operations, aligning with the understanding that maximizing this differential can lead to better drying outcomes.

In summary, selecting Tuesday suggests it was the most optimal day for drying due to its significant vapor pressure differential, leading to enhanced moisture evaporation from materials.