All of the following are responsibilities of a beaker, except for?

A beaker is a common laboratory glassware used primarily for holding, mixing, and heating liquids. While it can perform multiple functions, one of its main limitations is its ability to measure exact volumes accurately.

Beakers generally come with measurement markings, but these are not designed for precision measurement. For scientific experiments that require exact volumes, other lab equipment, such as graduated cylinders or volumetric flasks, is more appropriate. They provide a clearer and more accurate method of measurement, making them better suited for tasks where precision is crucial.

On the other hand, beakers can efficiently pour liquids due to their spout-like design, serve as containers for storing various solid samples, and are frequently used for mixing chemical solutions thanks to their wide openings. Thus, measuring exact volumes is the responsibility that does not align with the primary function of a beaker.