SAChE Chemical Reactivity Hazards (ELA962) Practice Test

Inerting is about creating a protective environment by displacing air with an inert gas, usually nitrogen. Many reactive mixtures are sensitive to oxygen and moisture in the air; exposure can trigger oxidation, hydrolysis, or even violent, runaway reactions. By blanket­ing the material with nitrogen, you minimize contact with oxygen and water, reducing the chance of these unwanted reactions and ignition. This safer atmosphere is the core purpose of inerting.

The other options don’t fit because inerting is not aimed at speeding up reactions, providing a reactive gas, or cooling the mixture. Increasing reaction rate would raise hazards, while introducing a reactive gas would add danger. Cooling is a separate control strategy and not what inerting is designed to achieve—the goal is to exclude air and moisture, not alter temperature.