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Quizzes > High School Quizzes > Science

Lab Safety Practice Test

Master safety protocols with interactive quiz questions

Difficulty: Moderate
Grade: Grade 9
Study OutcomesCheat Sheet
Paper art representing a trivia quiz on lab safety for high school science students.

What is the most important laboratory safety rule regarding personal protective equipment (PPE)?
PPE is optional if you are careful
Always wear appropriate PPE (safety goggles, lab coat, gloves)
PPE is provided for decoration only
You only need PPE when working with hazardous chemicals
Wearing proper PPE protects you from potential hazards in the lab. It is essential that you always wear goggles, lab coats, and gloves as needed.
What should you do if you accidentally spill a small amount of a chemical on your bench?
Clean it using your hands without gloves.
Immediately notify your supervisor and follow proper cleanup procedures.
Cover it up with paper towels.
Ignore the spill if it looks minor.
Reporting spills ensures that they are handled safely. Following cleanup protocols minimizes the risk of exposure and contamination.
In a laboratory, what is the purpose of a safety shower?
To serve as a water supply for experiments.
To wash off chemicals in case of contamination.
To cool down overheated equipment.
To take a quick shower during break time.
A safety shower is for emergency use to wash off corrosive substances. It minimizes injuries by quickly decontaminating exposed areas.
Before starting any experiment, what should you always check?
That the lights are on.
That your laboratory notebook is empty.
That the lab tables are arranged nicely.
That all safety equipment is available and operational.
Verifying that safety equipment is accessible ensures a safe working environment. This practice reduces risks and facilitates emergency response if needed.
How should chemicals be stored in a lab?
Close to food and drinks for quick access.
According to their compatibility and hazard class.
Randomly on any available shelf.
In an unmarked container.
Proper chemical storage is essential to prevent dangerous reactions. Chemicals should be organized according to their hazard class and compatibility.
What is the correct procedure to follow when wearing lab gloves?
Remove them by ripping them off.
Wipe them on your clothing before removal.
Shake them off quickly.
Remove them safely to avoid contamination and wash your hands afterward.
Removing gloves safely prevents cross-contamination. Washing your hands immediately further reduces the risk of chemical exposure.
Which lab symbol indicates that a substance is flammable?
A skull and crossbones.
A biohazard sign.
A radiation symbol.
A flame symbol.
The flame symbol alerts you that a substance can catch fire easily. Recognizing such symbols is crucial for safe chemical handling in the lab.
If you are working with chemicals under a fume hood, what is the recommended practice?
Always keep the fume hood sash at the recommended level to ensure effective ventilation.
Work quickly to minimize exposure.
Close the fume hood sash to keep the chemicals contained.
Leave the sash completely open to allow maximum airflow.
Proper usage of a fume hood involves keeping the sash at the appropriate level for effective ventilation. This practice ensures harmful vapors are safely removed from your breathing space.
When should you dispose of chemical waste?
At the end of the school day, regardless of guidelines.
At the end of the experiment, following proper hazardous waste disposal protocols.
By mixing with other chemicals to reduce waste volume.
Whenever you feel it is no longer needed.
Chemical waste must be disposed of according to established guidelines to prevent hazardous reactions and environmental contamination. Following the lab's disposal protocols ensures safety.
Why is it important to label all chemical containers in the lab?
To decorate the lab environment.
To ensure correct handling, prevent mixing incompatible chemicals, and maintain a safe working environment.
To increase the storage capacity.
To make chemicals harder to find.
Proper labeling helps in identifying chemicals and understanding their hazards. It prevents accidental misuse and dangerous chemical reactions by ensuring that everyone knows what is stored.
What is the proper action if you notice a broken piece of glassware in the lab?
Simply step around it and ignore it.
Inform the teacher and use appropriate tools to clean it up, ensuring you avoid cuts.
Leave it on the bench for someone else to clean.
Use your hands to pick it up without any protection.
Handling broken glassware requires caution to avoid injury. Reporting it ensures that the hazard is neutralized quickly and safely.
What should you do if an accident occurs during an experiment?
Try to fix the accident without notifying anyone.
Continue the experiment to avoid delaying results.
Leave the lab area quickly without alerts.
Stop work immediately, inform the teacher, and follow the emergency procedures.
Stopping work immediately allows you to assess the situation and minimizes harm. Notifying the teacher ensures that appropriate emergency measures are taken.
Which practice contributes most to a safe laboratory environment?
Cluttering the lab with unnecessary equipment.
Keeping the work area clean and organized during experiments.
Ignoring minor spills as they are not hazardous.
Wearing casual clothing for comfort.
A clean and organized workspace reduces the risk of accidents and contamination. It also allows for faster and more effective responses in emergencies.
What is the purpose of a Material Safety Data Sheet (MSDS) in the lab?
To serve as a record of experimental outcomes.
To list the price of chemicals used.
To advertise laboratory instruments.
To provide detailed information on chemical properties, hazards, and safe handling procedures.
The MSDS contains crucial details about chemicals that help users understand associated risks and handling protocols. It is an essential resource for ensuring safety in the lab.
How can you best prevent cross-contamination between experiments in the lab?
By performing experiments simultaneously.
By using the same tools without cleaning.
By ignoring contaminated equipment.
By cleaning and decontaminating all equipment between uses.
Regular cleaning and decontamination of equipment minimizes the risk of cross-contamination. This practice is crucial for maintaining both experimental integrity and a safe working environment.
When handling concentrated acids, what additional precaution should be taken?
Skip using PPE if familiar with the acid.
Dilute water into acid slowly.
Mix acid and water simultaneously.
Always add acid to water, not water to acid, to prevent exothermic reactions.
Adding acid to water allows heat generated during dilution to dissipate safely, reducing the risk of splattering. This precaution is a fundamental safety practice when working with concentrated acids.
In the event of a small chemical fire, what is the proper procedure to extinguish it in a lab setting?
Pour water directly onto the fire regardless of chemical type.
Use a fire extinguisher rated for chemical fires and follow the PASS technique.
Fan the flames to cool the fire.
Smother the fire with a plastic lid.
Using the appropriate fire extinguisher and the PASS (Pull, Aim, Squeeze, Sweep) technique ensures that the fire is controlled safely. This minimizes the risk of chemical reactions exacerbating the situation.
Why is it critical to understand the properties of chemicals before mixing them?
Because mixing chemicals boosts experiment efficiency.
Because mixing chemicals without knowing their reactivity can lead to explosions or toxic gas release.
Because chemicals become less reactive when mixed.
Because chemical mixing always neutralizes hazards.
Understanding chemical properties is essential to prevent hazardous reactions. Without proper knowledge of reactivity, mixing chemicals can result in explosions or the release of toxic gases.
What steps should be taken to ensure safe handling of hazardous biological materials in a laboratory?
Avoid labeling them to prevent misuse.
Handle biological materials without PPE for better tactile work.
Dispose of biological materials down the regular drain.
Follow biosafety protocols, use appropriate PPE, and dispose of waste according to biohazard guidelines.
Adhering to biosafety protocols is crucial when handling hazardous biological materials. Using proper PPE and following biohazard waste disposal procedures safeguard both individuals and the laboratory environment.
How should you respond if you identify a potential chemical hazard not listed in the lab manual?
Report it immediately to the lab supervisor and consult safety protocols for further assessment.
Mark it and discuss with peers later.
Ignore it because it is not documented.
Try to address it on your own without assistance.
Immediate reporting of unknown hazards is essential for maintaining a safe work environment. Consulting with a supervisor ensures proper assessment and prompt implementation of safety measures.
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Study Outcomes

  1. Identify essential laboratory safety protocols and procedures.
  2. Analyze interactive scenarios to recognize potential hazards.
  3. Apply proper use of personal protective equipment in lab settings.
  4. Evaluate emergency response procedures during safety challenges.
  5. Implement best practices for maintaining a safe laboratory environment.

Lab Safety Test Review Cheat Sheet

  1. Gear Up with PPE - Your lab coat, safety goggles, and gloves act like a superhero suit against spills and splatters. Suit up every time you enter the lab to keep hazards at bay. Safety never goes out of style! Lab Safety (Wikipedia)
  2. Keep Your Workspace Tidy - A cluttered bench is an accident waiting to happen. Keep beakers, pipettes, and notebooks in their place so you can find what you need and react fast if something goes awry. Clean labs are happy labs! Science Lab Safety Rules
  3. Know Your Safety Stations - Emergencies don't wait for Google searches. Familiarize yourself with where eyewash stations, safety showers, and fire extinguishers live so you can spring into action. Practice makes perfect, even in drills! Lab Safety Rules (OSU)
  4. Ban Snacks and Makeup - Food and drinks belong outside the lab. Munching on chips or sipping coffee while handling chemicals can invite nasty contamination. Keep cosmetics in your bag - your skin will thank you later! Stanford Lab Safety
  5. Label Like a Pro - A mystery bottle is a danger zone. Always slap on a clear label with the chemical name and hazard symbols so you (and your lab pals) know exactly what's inside. Good labeling keeps the surprises for birthday parties, not reactions! Container Labeling Tips
  6. Use Fume Hoods Properly - Volatile vapors can sneak up on you like a prankster. Slide behind the sash of a fume hood to trap fumes and breathe easier. It's like giving your nostrils a VIP filter pass! LSU Lab Safety Manual
  7. Tackle Waste the Right Way - Trash might seem harmless until it's loaded with sharps or toxic goo. Separate chemical, biological, and sharp waste according to your lab's rulebook. Proper disposal keeps the planet and your lab mates smiling. Important Lab Safety Rules
  8. Never Lab Alone - Solo stints in the lab can turn spooky if something goes wrong. Always have a buddy or someone who knows your schedule - backup is key when experiments throw curveballs. Two minds are safer than one! General Lab Safety Practices
  9. Decode Safety Symbols - Lab safety symbols are the secret language of hazards. Memorize those little diamond warnings so you can spot risks faster than a game of charades. Reading symbols is more fun than decoding ancient texts! Lab Safety Rules (Labster)
  10. Master Spill Response - Spills happen, but you can be the cleanup champion. Alert your crew, grab the right spill kit, and follow the cleanup steps to a T. Fast action turns messes into memories, not disasters! Lab Spill Response Tips
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