If water in a dishwasher is excessively hot, which statement best describes its effect on food residues?

If water in a dishwasher is excessively hot, which statement best describes its effect on food residues?

• A. Food residues may vanish without trace.
• B. Detergent will emulsify more efficiently.
• C. Water usage decreases.
• D. The foods may bake onto the dishware.

Answer: (D)

Excessively hot water can cause food residues to bake onto dishware. While heat helps dissolve soils, when the water is far hotter than needed, moisture evaporates quickly and remaining particles dry into a crust that sticks to surfaces. Proteins and sugars from food can set under intense heat, making sticking even more likely. So the idea that the foods may bake onto the dishware best describes the result of overly hot water. Residues don’t simply vanish because the water is hot, and although heat aids detergents to some extent, too much heat can cause soils to adhere rather than wash away. Water usage isn’t determined by temperature, so that option doesn’t reflect the effect of heat on residues.

Excessively hot water can cause food residues to bake onto dishware. While heat helps dissolve soils, when the water is far hotter than needed, moisture evaporates quickly and remaining particles dry into a crust that sticks to surfaces. Proteins and sugars from food can set under intense heat, making sticking even more likely. So the idea that the foods may bake onto the dishware best describes the result of overly hot water. Residues don’t simply vanish because the water is hot, and although heat aids detergents to some extent, too much heat can cause soils to adhere rather than wash away. Water usage isn’t determined by temperature, so that option doesn’t reflect the effect of heat on residues.