Compounds consisting of hydrogen, a non-metal, and containing compounds of nitrogen are classified as what?

The correct answer is ammonia. Ammonia is a compound that consists of nitrogen and hydrogen, specifically with the chemical formula NH₃. It is a colorless gas with a distinct odor and is commonly used in various applications, including cleaning products and fertilizers.

In this context, ammonia fits the criteria of the question because it contains nitrogen and is made up of hydrogen in a molecular structure. The focus on the composition highlights ammonia’s role as a basic nitrogen-containing compound.

Other options, like urea, hydrazine, and nitric acid, have different structures and properties. Urea is an organic compound made of carbon, nitrogen, oxygen, and hydrogen, rather than being purely a hydrogen-nitrogen compound. Hydrazine, while also containing nitrogen and hydrogen, has different molecular characteristics and is primarily used as a rocket fuel and in chemical syntheses. Nitric acid, on the other hand, consists of nitrogen, oxygen, and hydrogen, which makes it unsuitable as it does not fit the specified criteria since it lacks the direct hydrogen-nitrogen composition described in the question.

Thus, ammonia clearly meets the definition as a compound composed of hydrogen and nitrogen, aligning with the question's requirements.