Quiz Text B Lab Equipment

What is the primary function of a watch glass in a laboratory setting?

• To measure precise volumes of liquids
• To serve as a lens for microscopes
• To hold small amounts of solids and cover beakers
• To filter contaminated solutions

Which laboratory tool allows for measuring liquid volumes to the nearest 0.1 mL?

• Graduated cylinder
• Buret
• Volumetric flask
• Pipet

What is a key difference between volumetric and graduated pipets?

• Volumetric pipets are made of plastic, graduated pipets of glass
• Volumetric pipets are for single volumes, graduated pipets for variable volumes
• Volumetric pipets are less accurate than graduated pipets
• Graduated pipets don't require a pipet pump

Why are weighing trays important in laboratory work?

• They heat substances efficiently
• They measure temperature accurately
• They prevent contamination of the balance pan
• They calibrate electronic balances

When reading a graduated cylinder, what should you do to avoid parallax error?

• Hold it up to the light
• Read it at eye level
• Shake the cylinder first
• Read it from above

What is the primary purpose of beaker tongs?

• To measure liquid temperature
• To safely handle hot beakers
• To crush solid materials
• To calibrate beakers

Which material characteristic is essential for a lab apron?

• Water solubility
• Electrical conductivity
• Chemical resistance
• Transparency

What is the main use of a wash bottle in the laboratory?

• Storing concentrated acids
• Measuring precise volumes
• Dispensing distilled water
• Collecting waste materials

Which tool would be most appropriate for adding drops of indicator solution?

• Buret
• Dropper pipet
• Graduated cylinder
• Volumetric flask

What is the primary purpose of a test tube holder?

• To organize multiple test tubes
• To clean test tubes
• To safely handle hot test tubes
• To measure test tube contents