Chemistry Laboratory Safety Quiz
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Questions and Answers

What was the cause of Michele Dufault's death?

  • Chemical poisoning
  • Accidental asphyxia by neck compression (correct)
  • Gunshot wound
  • Falling from a height

Where was Michele Dufault when the accident occurred?

  • Student dormitory
  • Physics and astronomy lab
  • University library
  • Chemistry lab machine shop (correct)

What was Michele Dufault majoring in?

  • Chemistry
  • Biology
  • Mechanical engineering
  • Physics and astronomy (correct)

Where is Michele Dufault's hometown?

<p>Scituate, Massachusetts (C)</p> Signup and view all the answers

What caused the fiery accident involving Sheri Sangji in the chemistry laboratory?

<p>Accidental ignition of a compound (A)</p> Signup and view all the answers

Which term best describes the materials that belong to the pyrophoric class?

<p>Ignite upon exposure to air (B)</p> Signup and view all the answers

What is the consequence of exposure of pyrophoric materials to air?

<p>Rapid ignition (B)</p> Signup and view all the answers

Why is chemistry often described as having a wonderfully explosive nature?

<p>Because teachers use fiery demonstrations to engage students (C)</p> Signup and view all the answers

What charges were the defendants facing in the UCLA case?

<p>Charges of violating occupational standards (C)</p> Signup and view all the answers

Who was Sheri Sangji in relation to the case?

<p>The deceased whose death was associated with the violations (D)</p> Signup and view all the answers

How did Sangji sustain her injuries according to the text?

<p>Her hair got caught in a lab machine shop (A)</p> Signup and view all the answers

What did Harran express following Sangji's death?

<p>Shock and grief (C)</p> Signup and view all the answers

What term describes materials that ignite upon exposure to air?

<p>Pyrophoric (B)</p> Signup and view all the answers

What was Sheri Sangji's occupation at the time of the accident?

<p>Research assistant (A)</p> Signup and view all the answers

What university was Sheri Sangji working at when the accident occurred?

<p>University of California, Los Angeles (C)</p> Signup and view all the answers

Which department does the settlement mention in relation to the felony charges?

<p>Laboratory Operations (B)</p> Signup and view all the answers

What class of materials do pyrophoric substances belong to?

<p>Materials that ignite spontaneously (D)</p> Signup and view all the answers

What aspect of t-butyllithium caused the burns described in the text?

<p>Its corrosive nature (D)</p> Signup and view all the answers

In what context was Richard Harran charged in the UCLA case?

<p>Inadequate laboratory safety practices (A)</p> Signup and view all the answers

What was the specific reason for Sangji's death according to the text?

<p>Violation of safety regulations (D)</p> Signup and view all the answers

What was the role of Sheri Sangji in the laboratory where the accident occurred?

<p>Research assistant (C)</p> Signup and view all the answers

Why did Sangji sustain severe burns according to the text?

<p>Failure to follow safety protocols (D)</p> Signup and view all the answers

What was the official cause of Michele Dufault's death?

<p>Neck compression (A)</p> Signup and view all the answers

What was the primary consequence of Michele Dufault's hair getting caught in the lathe?

<p>Asphyxiation by neck compression (A)</p> Signup and view all the answers

How did Richard Levin describe Michele Dufault's passing in his message to Yale students and faculty?

<p>'A true tragedy' (C)</p> Signup and view all the answers

What was Michele Dufault majoring in at Yale University?

<p>Physics and Astronomy (B)</p> Signup and view all the answers

Where was Michele Dufault's body discovered after the unfortunate incident?

<p>Chemistry lab machine shop (D)</p> Signup and view all the answers

What is the consequence of adding a solvent to nitric acid, according to the text?

<p>Spark leading to a flash and smoke (D)</p> Signup and view all the answers

What is the purpose of Yale's state-of-the-art machine shop as mentioned in the text?

<p>For faculty and staff to modify research instruments (C)</p> Signup and view all the answers

How did the chemical reaction in the lab involving Michele Dufault occur?

<p>Flash caused by combining substances (D)</p> Signup and view all the answers

What did Trenton Department Captain Michael Oakley confirm about the unplanned chemical reaction?

<p>The involvement of incompatible chemicals (D)</p> Signup and view all the answers

What was Michele Dufault's intended career path after graduating, as mentioned in the text?

<p>Oceanographer (A)</p> Signup and view all the answers

What is the recommended personal protective equipment (PPE) when working in a laboratory setting?

<p>Safety glasses/goggles, long lab coat, close-toed shoes, long pants, and gloves (D)</p> Signup and view all the answers

What should you do before handling a chemical in the laboratory?

<p>Check if gloves are required and what type of gloves should be worn (A)</p> Signup and view all the answers

What is the recommended action for heating Pyrex containers in the laboratory?

<p>Heat them in an open flame (B)</p> Signup and view all the answers

In case of reactions producing gases, what safety equipment should be used in a laboratory setting?

<p>Fume hood or vent (C)</p> Signup and view all the answers

What should never be done with unlabeled chemical containers in a laboratory?

<p>Use them without checking the contents (B)</p> Signup and view all the answers

What is the recommended action for solid chemical spills in a laboratory?

<p>Brush the solid spills into a dustpan and deposit in the garbage (D)</p> Signup and view all the answers

When should vents above a lab bench be lowered for maximum effectiveness?

<p>Over the area where fumes are produced (D)</p> Signup and view all the answers

What is the proper procedure for dealing with an acid spill in a laboratory?

<p>Neutralize the spill with a solid acid neutralizer and sweep up the residue (D)</p> Signup and view all the answers

What should be done with broken glass in a laboratory setting?

<p>Deposit in the garbage (B)</p> Signup and view all the answers

Why is it important to keep chemicals separate in a laboratory setting?

<p>To prevent chemical reactions from occurring (C)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides?

<p>Convert to non-toxic cyanates using bleach (B)</p> Signup and view all the answers

How should lead, cadmium, and antimony salts be disposed of?

<p>Convert to insoluble sulfides and bury in landfill (D)</p> Signup and view all the answers

What is the recommended method for destroying peroxides?

<p>Shake with sodium metabisulfite solution (D)</p> Signup and view all the answers

How should strong oxidizing agents be rendered safe for disposal?

<p>Reduced with 10% sodium bisulfite and then flushed down the drain (D)</p> Signup and view all the answers

What should be done with silver & nickel wastes according to the text?

<p>Recover and reuse (D)</p> Signup and view all the answers

How are organic solvents typically stored in laboratories?

<p>Stored in glass or metal containers in the fumehood (D)</p> Signup and view all the answers

What is the recommended method for disposing non-hazardous solids?

<p>. Disposing of in the regular garbage (C)</p> Signup and view all the answers

How should acids & bases be neutralized before disposal?

<p>Mixed together to neutralize, tested with litmus paper, and then flushed down sink with large amounts of water (C)</p> Signup and view all the answers

How can lead, cadmium, and antimony salts be made safe for disposal?

<p>Converted to insoluble sulfides (D)</p> Signup and view all the answers

What is an appropriate method for disposing silver & nickel wastes?

<p>Recover and reuse (D)</p> Signup and view all the answers

What term best describes materials that ignite spontaneously upon exposure to air?

<p>Pyrophoric materials (C)</p> Signup and view all the answers

Which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?

<p>Dry chemical fire extinguisher (C)</p> Signup and view all the answers

What is the purpose of Met-L-X in laboratory safety?

<p>Extinguishing combustible metal fires (A)</p> Signup and view all the answers

In a laboratory setting, which type of fire is wet chemical fire extinguishers most effective against?

<p>Class K fires (cooking oils) (D)</p> Signup and view all the answers

Why are organic solvents typically stored in flammable storage cabinets in laboratories?

<p>To minimize the risk of fire (C)</p> Signup and view all the answers

What specific charges were the defendants in the UCLA case facing in relation to the death of Sheharbano Sangji?

<p>Violating fire safety protocols (A)</p> Signup and view all the answers

How did Richard Harran describe Sheri Sangji's death?

<p>A shocking event resulting from severe burns (B)</p> Signup and view all the answers

In what context was Sangji's abdominal wall burned off?

<p>Handling t-butyllithium without proper safety gear (A)</p> Signup and view all the answers

What role did Sheri Sangji have at the time of the lab accident?

<p>Research Assistant (D)</p> Signup and view all the answers

What was the cause of Michele Dufault's passing at Yale University?

<p>Hair Entanglement in Machinery (B)</p> Signup and view all the answers

What is the primary purpose of Met-L-X, as mentioned in the text?

<p>Extinguishing fires caused by flammable metals (D)</p> Signup and view all the answers

In the context of the text, what is Halotron commonly used for in laboratory settings?

<p>Extinguishing fires without leaving any residue (D)</p> Signup and view all the answers

What is the recommended action when facing a fire involving wet chemicals in a laboratory?

<p>Evacuate the area and then call emergency services (A)</p> Signup and view all the answers

What is the function of a wet chemical extinguisher in laboratory safety?

<p>Extinguishing fires involving electrical equipment (C)</p> Signup and view all the answers

In the context of laboratory safety, what do Halogenated Hydrocarbons primarily refer to?

<p>Compounds that can be toxic when inhaled (A)</p> Signup and view all the answers

What is the consequence when incompatible chemicals react in a laboratory setting, as described in the text?

<p>They lead to a flash and smoke, possibly sparking a fire. (C)</p> Signup and view all the answers

Based on the text, what safety measure was not followed that led to the chemical reaction in the lab?

<p>Proper storage of chemicals (B)</p> Signup and view all the answers

In the incident described, what was the immediate result of adding a solvent to nitric acid?

<p>Formation of a flash and smoke (A)</p> Signup and view all the answers

What was the primary reason for the guard and two students being treated after the chemical reaction in the lab?

<p>Exposure to a plume of vapors (B)</p> Signup and view all the answers

What was indicated as access requirements for Yale's state-of-the-art machine shop where the incident occurred?

<p>Completion of a shop course (C)</p> Signup and view all the answers

What is the correct procedure to follow when heating flammable materials in a laboratory setting?

<p>Heat the material using a Bunsen burner in a fume hood (A)</p> Signup and view all the answers

What is the safest approach for disposing of solid chemical spills in a laboratory?

<p>Use proper spill kits and follow the specific disposal instructions for each chemical spilled (C)</p> Signup and view all the answers

What is the recommended method for neutralizing acids and bases before disposal in a laboratory?

<p>Add water to acids and bases slowly while stirring, then dispose following guidelines (B)</p> Signup and view all the answers

What type of personal protective equipment (PPE) should be worn when handling wet chemicals in a laboratory?

<p>Gloves, long lab coat, safety glasses, close-toed shoes (C)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides in a laboratory environment?

<p>Follow specific disposal guidelines for hazardous waste when dealing with soluble cyanides (A)</p> Signup and view all the answers

What type of fire are wet chemical fire extinguishers most effective against?

<p>Class B fires (B)</p> Signup and view all the answers

What is the purpose of Met-L-X in laboratory safety?

<p>To extinguish fires caused by combustible metals (D)</p> Signup and view all the answers

What term best describes the materials that belong to the pyrophoric class?

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

In a laboratory setting, which type of fire extinguisher is most suitable for fires involving halogenated hydrocarbons?

<p>Dry chemical fire extinguishers (C)</p> Signup and view all the answers

Why should vents above a lab bench be lowered for maximum effectiveness?

<p>To ensure proper ventilation over the fume-producing area (A)</p> Signup and view all the answers

What is the recommended procedure for disposing of lead, cadmium, and antimony salts in a laboratory setting?

<p>Convert to insoluble sulfides and bury in a landfill (A)</p> Signup and view all the answers

Which method is suggested for rendering peroxides safe for disposal in a laboratory?

<p>Shaking with sodium metabisulfite solution (A)</p> Signup and view all the answers

What is the appropriate way to dispose of soluble cyanides according to the text?

<p>React with bleach to form non-toxic cyanates (C)</p> Signup and view all the answers

How are strong oxidizing agents like potassium permanganate and sodium chlorate rendered safe for disposal?

<p>Neutralized with 10% sodium bisulphite (A)</p> Signup and view all the answers

What is the purpose of Met-L-X mentioned in the text regarding laboratory safety?

<p>To extinguish metal fires (B)</p> Signup and view all the answers

Which class of materials belong to pyrophoric substances according to the text?

<p>Materials that ignite upon exposure to air (B)</p> Signup and view all the answers

What type of fire are wet chemical fire extinguishers most effective against in a laboratory setting?

<p>Flammable liquid fires (C)</p> Signup and view all the answers

How should acids and bases be neutralized before disposal according to the information provided?

<p>Neutralized, tested with litmus paper, and then flushed down sink (B)</p> Signup and view all the answers

How should organic solvents like diethyl ether and toluene typically be stored in laboratories?

<p>In metal containers within a fumehood (C)</p> Signup and view all the answers

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