Answer:
d) Hydrogen chloride
Step-by-step explanation:
Hydrogen chloride (HCl) is not a mixture. It is a chemical compound composed of two elements, hydrogen (H) and chlorine (Cl), combined in a fixed ratio. In contrast, the other options (antibiotic, evaporated milk, brewed coffee) all involve mixtures:
Antibiotics are typically mixtures of various chemical compounds used for medicinal purposes.
Evaporated milk is a mixture of milk and water with the water removed.
Brewed coffee is a mixture of water and coffee grounds, often with other components like sugar or cream added.
Hydrogen chloride, on the other hand, is a pure compound with a defined chemical formula (HCl) and consistent composition.