Selecting apparatus for accurate volume measurement

Steps:

• Determine the task: measure exactly 28 cm³ of liquid.
• Assess precision needs: moderate accuracy for non-titration volume.
• Review apparatus capabilities: choose graduated tool for variable volumes.
• Match to options: select device suited for 10-50 cm³ range.

Why B is correct:

• Measuring cylinder has clear graduations for variable volumes like 28 cm³, per standard lab practice for approximate quantitative measurements.

Why the others are wrong:

• A: Beaker provides only rough estimates, unsuitable for precise 28 cm³.
• C: Volumetric pipette delivers fixed volumes (e.g., 10 or 25 cm³), not adjustable to 28 cm³.
• D: Burette is for titration with fine control over small volumes, not general measurement.

Final answer: B