Basic Analytical Tools Quiz

What is the primary function of the photo diode in an electronic balance?

• To measure the temperature of the sample

• To detect the position of the sample pan

• To calibrate the balance automatically

• To provide light for the balance

Why is it important to keep the electronic balance level?

• To prevent the balance from overheating

• To make it easier to clean

• To reduce the risk of electrical shock

• To ensure accurate mass measurements

What is a hygroscopic material?

• A material that is magnetic

• A material that absorbs light

• A material that absorbs water from the atmosphere

• A material that emits heat

What is the purpose of a desiccator in the lab?

• To heat samples

• To cool samples

• To keep samples dry

• To weigh samples

What does 'TD' stand for on analytical glassware?

• To Deliver

• To Dry

• To Dilute

• To Disperse

Which type of pipet is best for delivering an exact total volume?

• Measuring pipet

• Graduated pipet

• Volumetric transfer pipet

• Micro pipet

What is the risk of using a squirt bottle to fill a volumetric flask?

• It can cause the flask to break

• It can cause the solution to evaporate

• It can lead to inaccurate volume measurements

• It can introduce contaminants

Why is it important to use precise glassware for dilutions?

• To save time

• To ensure accurate concentration measurements

• To prevent chemical reactions

• To reduce waste

What should be included in a lab notebook?

• Only the final results

• Only the materials used

• Everything you do, measure, and observe

• Only the procedures

Why is it important to calibrate glassware?

• To prevent it from breaking

• To ensure it is clean

• To verify its accuracy

• To make it easier to use