What common household items are connected to acids and bases?

• A. Water, sugar, and salt.
• B. Stomach acid, antacids, and household cleaners.
• C. Gasoline, motor oil, solvents.
• D. Milk, bread, and butter.

Answer: (B)

Acids and bases show up in everyday items we actually encounter, so concrete examples help connect the idea to real life. Stomach acid is a true acid, used in digestion. Antacids are bases that people take to neutralize that stomach acid when heartburn appears. Household cleaners often rely on either acidic or basic components to cut through grime or disinfect, so they’re a direct link to how acids and bases behave in familiar products. That combination—an acid present in the body, a base used to counteract it, and common cleaners that act as acids or bases—best demonstrates how these concepts appear around us.

The other options don’t center on acid–base chemistry in everyday contexts. Water, sugar, and salt are common substances but don’t illustrate acid–base behavior in a clear, applied way. Gasoline, motor oil, and solvents are mainly about lubrication or dissolving power, not about acids or bases in daily use. Milk, bread, and butter are foods with various tastes and textures but don’t highlight acid–base connections as a core idea.