Glassware Mastery: Unveiling the Secrets of Laboratory Equipment with 20 MCQs
What is the primary use of a low-form beaker?
- A. Titration
- B. Precise measurements
- C. General mixing and heating
- D. Volumetric work
- Answer: C. General mixing and heating
- Explanation: Low-form beakers are commonly used for general mixing and heating of liquids.
In which laboratory activity is a tall form beaker most suitable?
- A. Titration
- B. Precise measurements
- C. General mixing
- D. Volumetric work
- Answer: A. Titration
- Explanation: Tall form beakers are primarily used for titrations.
What is the characteristic shape of a volumetric flask?
- A. Cylindrical
- B. Pear-shaped
- C. Straight and tall
- D. Taller and narrower
- Answer: B. Pear-shaped
- Explanation: Volumetric flasks have a pear-shaped design with a long neck.
When is a graduated cylinder commonly used in the laboratory?
- A. Titration
- B. Precise measurements
- C. General mixing
- D. Measuring approximate volumes
- Answer: D. Measuring approximate volumes
- Explanation: Graduated cylinders are used for measuring approximate volumes of liquids.
What distinguishes a volumetric cylinder from a graduated cylinder?
- A. Shape
- B. Capacity
- C. Graduation markings
- D. Pouring technique
- Answer: C. Graduation markings
- Explanation: Volumetric cylinders have a single precise graduation mark.
Which laboratory instrument is essential for titration experiments?
- A. Burette
- B. Pipette
- C. Dispenser
- D. Syringe
- Answer: A. Burette
- Explanation: Burettes are precision instruments used for titration experiments.
What is the primary use of a volumetric pipette?
- A. Measuring approximate volumes
- B. Precise measurement of a specific volume
- C. Titration
- D. Dispensing liquids accurately
- Answer: B. Precise measurement of a specific volume
- Explanation: Volumetric pipettes are used for precise measurement of a specific volume.
Which type of pipette is suitable for less critical measurements?
- A. Volumetric pipette
- B. Graduated pipette
- C. Automatic pipette
- D. Micropipette
- Answer: B. Graduated pipette
- Explanation: Graduated pipettes are suitable for less critical measurements.
What is the main purpose of a dispenser in the laboratory?
- A. Titration
- B. Dispensing precise volumes
- C. Measuring small volumes
- D. Mixing and heating
- Answer: B. Dispensing precise volumes
- Explanation: Dispensers are used for dispensing liquids accurately.
What precaution should be taken when handling a micropipette?
- A. Use without calibration
- B. Handle without care
- C. Use disposable tips
- D. Overload to save time
- Answer: C. Use disposable tips
- Explanation: Disposable tips prevent contamination when using micropipettes.
In which laboratory activity is a tall form beaker most suitable?
- A. Titration
- B. Precise measurements
- C. General mixing
- D. Volumetric work
- Answer: A. Titration
- Explanation: Tall form beakers are primarily used for titrations.
What distinguishes a volumetric flask from other types of glassware?
- A. Cylindrical shape
- B. Pear-shaped design
- C. Narrow with a single graduation mark
- D. Taller and narrower
- Answer: B. Pear-shaped design
- Explanation: Volumetric flasks have a distinctive pear-shaped design.
Which glassware is designed for precise preparation of a specific volume of a solution?
- A. Graduated cylinder
- B. Volumetric flask
- C. Volumetric cylinder
- D. Burette
- Answer: B. Volumetric flask
- Explanation: Volumetric flasks are designed for precise preparation of a specific volume.
What is the primary use of a graduated pipette?
- A. Measuring approximate volumes
- B. Precise measurement of a specific volume
- C. Titration
- D. Dispensing liquids accurately
- Answer: A. Measuring approximate volumes
- Explanation: Graduated pipettes are used for measuring approximate volumes.
When pouring from a volumetric flask, what precaution should be taken?
- A. Pour quickly for efficiency
- B. Handle with care
- C. Read the meniscus at eye level
- D. Use without calibration
- Answer: B. Handle with care
- Explanation: Volumetric flasks should be handled with care, especially during pouring.
What is the primary use of an automatic pipette?
- A. Precise measurement of a specific volume
- B. Dispensing liquids accurately
- C. Measuring small volumes
- D. Repetitive liquid handling
- Answer: D. Repetitive liquid handling
- Explanation: Automatic pipettes are designed for precise and repetitive liquid handling.
What distinguishes a volumetric cylinder from a graduated cylinder?
- A. Shape
- B. Capacity
- C. Graduation markings
- D. Pouring technique
- Answer: C. Graduation markings
- Explanation: Volumetric cylinders have a single precise graduation mark.
What is the purpose of using a micropipette in the laboratory?
- A. Measuring approximate volumes
- B. Precise measurement of a specific volume
- C. Titration
- D. Dispensing liquids accurately
- Answer: B. Precise measurement of a specific volume
- Explanation: Micropipettes are used for extremely precise measurements in the microliter range.
What precaution should be taken when handling a burette?
- A. Rinse with the titrant after use
- B. Handle without care
- C. Overload for quicker results
- D. Use without calibration
- Answer: A. Rinse with the titrant after use
- Explanation: Burettes should be rinsed with the titrant before use to ensure accuracy.
Why is it essential to calibrate a dispenser regularly?
- A. For efficiency
- B. To save time
- C. To maintain accuracy
- D. To handle without care
- Answer: C. To maintain accuracy
- Explanation: Regular calibration ensures that the dispenser accurately dispenses precise volumes.
- Test Your Knowledge with Quiz
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