Instrument used to measure volume of a liquid

• A. Graduated Cylinder
• B. Erlenmeyer Flask
• C. Micropipette
• D. Water Bath

Answer: (A)

Measuring how much liquid is present requires a device with markings that let you read a specific volume. The graduated cylinder is designed for this purpose: its tall, narrow shape and evenly spaced markings allow you to determine volume accurately, reading at the bottom of the liquid’s meniscus at eye level. This makes it more precise for measuring liquids than other common lab containers.

An Erlenmeyer flask has a conical shape and curved walls, which makes its volume markings unreliable for precise measurements; it’s better suited for mixing or heating. A micropipette, while very precise, is used for transferring very small volumes, not for measuring the total volume in a container. A water bath is a temperature-controlled device and has nothing to do with measuring liquid volume.