Laboratory Safety Aspects and Familiarization Practical Quiz

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Questions and Answers

What tense should be used when writing the 'Materials & Methods' section of a practical report?

  • Future tense
  • Past passive tense (correct)
  • Present continuous tense
  • Present simple tense

When working in a laboratory, what is the recommended order for entering the details of a practical in a CR book?

  • Practical Number, Date, Title
  • Title, Date, Practical Number (correct)
  • Practical Number, Title, Date
  • Date, Title, Practical Number

What is the purpose of illustrating 15 laboratory safety signs in a practical report?

  • Decoration purposes
  • To display suitable safety signs for the laboratory (correct)
  • To practice drawing skills
  • To test other students' knowledge

When summarizing the knowledge acquired in a practical report, which verb tense should be primarily used?

<p>Past tense (C)</p> Signup and view all the answers

What type of lines should be used when drawing pictures for laboratory reports?

<p>Straight lines (D)</p> Signup and view all the answers

Which section of a practical report should include a list of common laboratory glassware and their uses?

<p>'Observations' section (D)</p> Signup and view all the answers

What is the difference between hazard and risk?

<p>Hazard is something that can cause harm, while risk is the probability of being harmed under specific circumstances. (D)</p> Signup and view all the answers

Why should one not eat or drink in the laboratory?

<p>To prevent accidental exposure to harmful substances. (B)</p> Signup and view all the answers

What should you do with water bottles and bags while in the laboratory?

<p>Place them outside the laboratory in a locker. (C)</p> Signup and view all the answers

Why should you refrain from using laboratory equipment unless you are familiar with it or under supervision?

<p>To prevent injury to yourself and others. (D)</p> Signup and view all the answers

Why is it important to wash your hands after a laboratory session?

<p>To remove any chemical residue from your hands. (B)</p> Signup and view all the answers

How should you handle expensive and sensitive laboratory equipment?

<p>Ensure proper handling and clean them after every use. (B)</p> Signup and view all the answers

What type of glassware is commonly used for storing chemicals that tend to degrade under sunlight?

<p>Soda-Lime glass (B)</p> Signup and view all the answers

Which of the following chemicals can still be corrosive to laboratory glassware?

<p>Phosphoric acid (H3PO4) (A)</p> Signup and view all the answers

What should you avoid doing when lifting or carrying laboratory glassware?

<p>Holding the trim or neck (C)</p> Signup and view all the answers

What should be done when cleaning laboratory glassware to facilitate longer use and precise results?

<p>Use a biodegradable phosphorous free detergent (C)</p> Signup and view all the answers

What safety precautions should be taken before using any laboratory apparatus?

<p>Check for cracks or leaks (D)</p> Signup and view all the answers

What should be avoided when diluting concentrated acids or alkaline solutions into glass measuring cylinders?

<p>Exposing to direct heat (D)</p> Signup and view all the answers

What is the recommended method for filling a pipette to avoid mouth pipetting?

<p>Use a mechanical pipette filler (D)</p> Signup and view all the answers

What should you do before heating a mixture or test in glassware?

<p>Heat slowly and gradually (B)</p> Signup and view all the answers

What does using an open flame in a Bunsen burner require?

<p>Employing a soft flame and ceramic center of wire gauze (C)</p> Signup and view all the answers

What should be done with broken glassware in the laboratory?

<p>Dispose into a separate bin kept for broken glassware (A)</p> Signup and view all the answers

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