Which of the following is a glassware item used in chemical and biological production laboratories?

• A. Beaker
• B. Ring Stand
• C. Clamp
• D. Bunsen Burner

Answer: (A)

Beakers are the basic glass containers used for holding, mixing, and heating liquids in chemical and biological work. They’re typically made of borosilicate glass, which withstands heat and a range of reagents, and they have a wide mouth, a flat bottom, and a small pour spout for easy transfer. This combination makes them versatile for quick stirring, heating over a hot plate, and pouring into other vessels. While many beakers have graduation marks to estimate volume, they’re not meant for precise measurements—that role belongs to volumetric flasks or graduated cylinders. The other items listed aren’t glassware: a ring stand and a clamp are support hardware, and a Bunsen burner is a heat source.