Why is a beaker commonly used for heating solutions in the laboratory?

• A. Beakers are made of heat-resistant glass and allow easy stirring and pouring.
• B. Beakers have precise volume markings for accurate measurements.
• C. Beakers prevent all evaporation during heating.
• D. Beakers are designed to withstand extremely high pressures.

Answer: (A)

Verified step by step guidance

1. Understand the primary purpose of a beaker in the laboratory: it is used to hold, mix, and heat liquids.
2. Recognize that beakers are typically made from heat-resistant glass, such as borosilicate glass, which allows them to withstand the temperatures involved in heating without breaking.
3. Note that the wide mouth of a beaker facilitates easy stirring of the solution and convenient pouring, which is important during heating and mixing processes.
4. Consider the volume markings on beakers: they provide approximate measurements but are not highly precise, so they are not used when exact volume measurements are required.
5. Understand that beakers do not prevent evaporation during heating, nor are they designed to withstand extremely high pressures; these functions are served by other specialized laboratory equipment.