Which item is not included in the practice of chemical engineering?

• A. Estimation
• B. Chemical analysis
• C. Preparation of specifications
• D. Teaching professional chemical engineering subjects

Answer: (B)

The main idea here is how tasks fit into the day-to-day practice of chemical engineering versus specialized laboratory chemistry. In chemical engineering, the focus is on designing and running processes—figuring out how much material and energy are needed, sizing equipment, and writing specifications that guide procurement and construction. Those activities—estimation and preparation of specifications—are core engineering tasks because they drive the design and implementation of processes.

Chemical analysis, while essential for understanding streams and ensuring quality, is a laboratory practice rooted in analytical chemistry. It provides the data engineers rely on, but performing chemical analyses themselves isn’t considered part of the engineering design and decision-making workflow. It’s more about generating the information rather than applying it to design, scale, and specification development. Thus, chemical analysis is not included in the typical practice of chemical engineering, which is why it’s the correct choice.