Question

which of the following compounds are organic? organic carbohydrate protein water nitrogen gas inorganic

Explanation:

Organic compounds contain carbon - hydrogen bonds. Carbohydrates and proteins are large biological molecules with carbon - hydrogen bonds. Water ($H_2O$) and nitrogen gas ($N_2$) do not have carbon - hydrogen bonds and are inorganic.

Answer:

Organic: carbohydrate, protein
Inorganic: water, nitrogen gas