Which type of lead was commonly used in residential paint?

White lead is commonly recognized as a type of lead historically used in residential paint due to its effective pigmentation and durability. It was frequently employed in the formulation of paints up until the mid-20th century. The benefits of white lead included its ability to provide a bright white finish and its resistance to corrosion, making it appealing for use in homes.

Additionally, white lead has been associated with significant health risks, particularly lead poisoning, which is why its usage has been heavily regulated or banned in many countries. This historical context is crucial for understanding the material's relevance in discussions about lead exposure and risk assessment in residential settings.

The other options, while they may refer to different colors or formulations containing lead, were not predominantly used in residential paint. Red lead, for example, was primarily used in industrial applications, while yellow chromate could be used in specific coatings but did not see as widespread application in residential paint as white lead. Blue lead is not recognized as a standard term in paint formulations, thereby supporting the conclusion that white lead is the correct answer in this context.