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Laboratory beaker — reference view
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Pouring spout

Guides liquid during pouring.

Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.

Laboratory beaker — reference view

Image: Hannes Grobe 19:03, 3 September 2006 (UTC) · Source / original · CC BY-SA 2.5

Resized and converted to WebP; original colours retained.

Laboratory beaker

Glassware & preparation

Laboratory beaker

Griffin beaker · mixing beaker

THE FIRST VIVA QUESTION

What is its use?

Holds, mixes and transfers liquids during sample and reagent preparation.

Tap a number to locate its part. Zoom, drag or use full screen to inspect the reference. Models and graduations can differ; check the actual apparatus used in your laboratory.

01 / IDENTIFICATION

How to recognise it.

  1. Wide cylindrical body
  2. Pouring spout
  3. Flat base with approximate scale
Tell the difference.

Use calibrated volumetric apparatus when the final concentration requires accurate volume measurement.

02 / NUMBERED PARTS

Point them out.

Choose a part to bring its numbered marker into view.

03 / WORKING PRINCIPLE

The science behind the reading.

A wide opening supports stirring and pouring; graduations give only approximate volumes.

04 / VIVA PRACTICE

Think first. Then reveal.

Explain your answer aloud before opening it.

01Can a beaker prepare an exact standard volume?
SUGGESTED ANSWER

It is not intended for that precision; use a suitable volumetric flask.

02Why is there a spout?
SUGGESTED ANSWER

It helps direct pouring.

03What does borosilicate glass offer?
SUGGESTED ANSWER

Greater resistance to thermal stress than ordinary soda-lime glass, within its rated limits.

04Why inspect glassware before use?
SUGGESTED ANSWER

Cracks or chips can cause breakage, contamination or injury.

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