Manufacturing Skill Standards Council (MSSC) Safety Assessment Practice Test

A _________ respirator only covers the nose and mouth of the user.

1. Quarter-mask

2. Half-mask

3. Full-mask

4. Hood

The correct answer is: Quarter-mask

The term that best fits the description of a respirator that only covers the nose and mouth is "half-mask." A half-mask respirator is designed to provide respiratory protection while still allowing visibility and mobility, commonly used in various industries where airborne contaminants may be present. It effectively filters out harmful particles or gases from the inhaled air through filters, while also allowing the user to communicate more easily and maintain comfort. In contrast, a quarter-mask typically covers less area than a half-mask and is not officially recognized as a standard type of respirator. A full-mask covers the entire face, including the eyes, and is used in situations where there is a need for full face protection against hazardous materials. A hood respirator usually encompasses the head and shoulders, providing a barrier against airborne contaminants more broadly than just on the nose and mouth. Therefore, the best choice that fits the specific description of covering only the nose and mouth is indeed the half-mask.