Safe Handling and Care of Laboratory Glassware and Measuring Apparatus

Try these questions

5 questions from this lesson’s quiz. Start the lesson to answer them and see the right answers.

1. 1. Where should your eye be placed when reading the volume of water in a measuring cylinder standing on the bench?

   • A. Above the top of the cylinder, looking down
   • B. Level with the bottom of the curved liquid surface
   • C. Below the base of the cylinder, looking up
   • D. Level with the highest point where the water touches the glass

2. 2. Which of these is the correct way to deal with a beaker that has a small star crack?

   • A. Heat it gently because the crack is very small
   • B. Use it only for cold liquids and heat it later
   • C. Do not use it, report it to the teacher and place it in the sharps bin
   • D. Wrap it in a cloth and heat it slowly

3. 3. A pupil wants to push a glass tube into a rubber bung. Which is the safest method?

   • A. Lubricate the tube, protect the hands with a cloth, grip near the bung and gently twist
   • B. Push the dry tube hard from the far end
   • C. Heat the tube until it is soft and then push it in
   • D. Hold the tube far from the bung to keep the fingers away from the hole

4. 4. Why should a volumetric flask or measuring cylinder never be dried in a hot oven?

   • A. The heat makes the liquid inside evaporate faster
   • B. The glass expands and its calibrated volume is permanently changed
   • C. The heat removes the markings from the glass surface
   • D. The glass becomes too cold to use afterwards

5. 5. What name is given to the curved upper surface of a liquid in a measuring cylinder?

   Type your answer in the lesson.

More in Laboratory Safety

• ▸First Aid Measures Cuts and Glassware Injuries
• ▸First Aid Ingestion and Inhalation
• ▸Fire Safety and Emergency Response
• ▸Safe Handling and Operation of the Bunsen Burner
• ▸Safe Handling and Care of Optical Instruments The Microscope
• ▸Electrical Safety and Safe Circuit Assembly
• ▸Safe Chemical Handling
• ▸Laboratory Safety Showcase

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