Concrete and drywall contain which mineral?

Concrete and drywall contain which mineral?

• A. Sand
• B. Clay
• C. Gypsum
• D. Quartz

Answer: (C)

Gypsum is the mineral involved. In drywall, panels are made from gypsum plaster pressed into a solid sheet, which is what gives drywall its smooth, solid core. In concrete, small amounts of gypsum are added to cement to regulate the hydration process, helping prevent the cement from setting too quickly and controlling heat during curing. That connection—gypsum as the key mineral in both materials—explains why it’s the right answer. Sand is mainly an aggregate in concrete and not a primary component of drywall; clay and quartz aren’t the standard minerals used in drywall, so they don’t fit as well.

Gypsum is the mineral involved. In drywall, panels are made from gypsum plaster pressed into a solid sheet, which is what gives drywall its smooth, solid core. In concrete, small amounts of gypsum are added to cement to regulate the hydration process, helping prevent the cement from setting too quickly and controlling heat during curing. That connection—gypsum as the key mineral in both materials—explains why it’s the right answer. Sand is mainly an aggregate in concrete and not a primary component of drywall; clay and quartz aren’t the standard minerals used in drywall, so they don’t fit as well.