Which statement correctly identifies the properties of Ammonia?

Ammonia is indeed characterized as a colorless gas that has a strong, pungent odor. This distinctive smell is one of its most notable properties, making it easily identifiable at low concentrations. Understanding ammonia's physical characteristics is crucial for safety and handling, especially in industrial settings where it is often used as a refrigerant and in various chemical processes.

In contrast to ammonia's actual properties, other options suggest incorrect physical states or characteristics. For example, ammonia is not a toxic liquid, nor is it non-toxic or sweet-smelling. Moreover, ammonia does not exist as a solid under normal conditions but rather remains a gas that can condense into a liquid when compressed or cooled. Recognizing these properties is essential for anyone working with ammonia to ensure safe practices and proper emergency response procedures.