Glassware used to accurately transfer small fixed volumes is:

• A. Volumetric Pipet
• B. Beaker
• C. Buret
• D. Graduated (Mohr) Pipet

Answer: (A)

Transfers of a precise, fixed volume are best done with a device that is calibrated to deliver that exact amount. A volumetric pipette is designed for this purpose: it has a single calibration mark and, when used correctly, delivers a defined volume exactly equal to the calibration value. You fill above the mark and then drain to the mark, so the volume dispensed is known and highly accurate, which is ideal for small fixed-volume transfers.

Beakers are for rough measurements and carry large uncertainties, so they aren’t suitable for precise transfers. A buret can deliver precise incremental volumes, but its main use is in titrations where volumes are added step by step, not fixed in one shot. A graduated (Mohr) pipet can measure and transfer varying volumes, but interpolation between marks introduces more potential error than a true volumetric pipette.