Final answer:
Testing for odor is a unique procedure during a liquid oxygen (LOX) receipt because LOX should be odorless. Odor presence may indicate contamination. The property of LOX to expand when vaporized allows for significant storage volume and safe handling in gaseous form.
Step-by-step explanation:
The procedure that is exclusively carried out during a liquid oxygen (LOX) receipt is to Test for odor. While monitoring for leaks, ensuring sufficient ullage in the receiving tank, and checking documentation are part of standard procedures for receiving many types of liquid supplies, including LOX, checking for odor is specific to LOX due to its unique characteristics.
Since LOX is an odorless gas, it should not have any detectable smell. The presence of an odor could indicate contamination, which is critical because any contaminants in LOX could cause it to behave unpredictably or dangerously. It's vital that the liquid oxygen remains pure, especially if it's going to be used in sensitive environments such as those required in aerospace or medical applications. Ensuring there is no odor assures both safety and quality of the LOX being received.
The LOX, once vaporized, will expand in volume as the gas is less dense than the liquid form. This property allows a large amount of oxygen to be stored in a small liquid volume and to be readily available for use when returned to a gaseous state under normal pressure. The displacement of water is a common practice in chemistry for collecting gas, indicating that oxygen does not dissolve in water and is less dense, hence it displaces the water as it collects in a container.