Which of the following laboratory materials is most appropriate for measuring large volumes of liquids needed for preparing reagents?

• A. Volumetric flask
• B. Beaker
• C. Buret
• D. Graduated cylinder

Answer: (B)

Verified step by step guidance

1. Understand the purpose of each laboratory material listed: a volumetric flask is designed for precise measurement of a single, specific volume, typically smaller volumes.
2. A buret is used for delivering variable but precise volumes of liquid, often in titrations, and is not ideal for measuring large volumes quickly.
3. A graduated cylinder is used for measuring volumes with moderate accuracy and is suitable for intermediate volumes, but not the largest volumes.
4. A beaker is a simple container used for holding and mixing liquids; it is not very precise but is suitable for measuring and handling large volumes of liquids quickly.
5. Therefore, for measuring large volumes of liquids needed for preparing reagents where high precision is not critical, the beaker is the most appropriate choice.