Tankers Exam 1 Practice

Understanding the difference between organic and inorganic chemicals is the key here. Inorganic chemicals are not built from carbon-hydrogen (hydrocarbon) structures. Acids, in everyday chemical cargo classifications, often refer to inorganic acids like sulfuric, hydrochloric, and nitric acids—typical mineral acids that fit the inorganic category. So pairing acids with inorganic chemicals directly matches the idea of inorganic, non-carbon-based substances.

The other options don’t fit this concept: alcohols and carbohydrates are classic organic compounds, and in-port prewash or cargo record book are shipping processes or documents rather than classifications of chemical nature.