Teacher Chemistry Lab Safety

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| By Michealolaoire
Michealolaoire, Science & Math teacher
Michael, a seasoned science and maths educator with 30+ years at Patrician Academy, Mallow. Specializing in question sets for assessments, his expertise includes facilitating Leaving Cert Chemistry for the PDST, reflecting a deep understanding of curriculum and assessment needs.
Quizzes Created: 3 | Total Attempts: 1,310
| Attempts: 299
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  • 1/11 Questions

    Which one of the following is not a necessary item in your laboratory?

    • Fire Extinguisher
    • Fire blanket
    • Eyewash station
    • Spill kit
    • Gas and electricity cut-off switch
    • Fridge
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About This Quiz


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Teacher Chemistry Lab Safety - Quiz

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  • 2. 
    The hazard symbol shown represents - ProProfs

    The hazard symbol shown represents

    • Irritant

    • Oxidising

    • Explosive

    • Flammable

    • Corrosive

    Correct Answer
    A. Oxidising
    Explanation
    The hazard symbol shown represents oxidising substances. These substances have the ability to release oxygen, which can cause or enhance the combustion of other materials. They are highly reactive and can pose a fire or explosion hazard if they come into contact with flammable or combustible materials. It is important to handle oxidising substances with caution to prevent accidents and ensure safety.

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  • 3. 
    A first aid kit should be kept - ProProfs

    A first aid kit should be kept

    • Sealed in a locked cabinet

    • safely in the preparation room

    • In the principal's office

    • Next to the teacher's desk

    Correct Answer
    A. Next to the teacher's desk
    Explanation
    The correct answer is "next to the teacher's desk" because it is the most accessible location in case of an emergency. Placing the first aid kit next to the teacher's desk ensures that it can be easily and quickly accessed by both the teacher and students if needed. This location also allows for immediate response and treatment in case of minor injuries or accidents that may occur in the classroom.

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  • 4. 
    A chemistry teacher wishes to make up a 1000 ml solution of a 0.1 M hydrochloric acid from a stock solution of 2 M HCl. What volume of the 2 M acid should be added to deionised water to make this solution up to 1000 ml? Give your answer as an integer with NO UNITS. - ProProfs

    A chemistry teacher wishes to make up a 1000 ml solution of a 0.1 M hydrochloric acid from a stock solution of 2 M HCl. What volume of the 2 M acid should be added to deionised water to make this solution up to 1000 ml? Give your answer as an integer with NO UNITS.

    Correct Answer
    50
    Explanation
    Correct. 50 mls.
    The correct formula to use is M1V1 = M2V2

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  • 5. 

    A student's hair and clothes catches fire in the laboratory. Do you

    • Spray the student with foam fire extinguisher

    • Roll the student on the floor

    • Spray the student with carbon dioxide extinguisher

    • Tell the student to run to the principal's office

    • Walk the student calmly outdoors

    • Reprimand the student for not tying his/her hair back.

    Correct Answer
    A. Roll the student on the floor
    Explanation
    Rolling the student on the floor is the correct answer because it is the most effective way to extinguish the fire on their hair and clothes. By rolling, the flames are smothered, and the fire is deprived of oxygen, which helps to put it out. Spraying the student with foam or carbon dioxide extinguishers may not be as effective in this situation, as they are designed for larger fires and may not be readily available in a laboratory. Telling the student to run to the principal's office or walking calmly outdoors may waste time and allow the fire to spread. Reprimanding the student is not a priority in this emergency situation.

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  • 6. 
    Gafety goggles should be disinfected - ProProfs

    Gafety goggles should be disinfected

    • After each laboratory practical

    • Weekly

    • Monthly

    • At the end of each school year

    Correct Answer
    A. After each laboratory practical
    Explanation
    Safety goggles should be disinfected after each laboratory practical to ensure that any potential contaminants or hazardous substances are removed. This practice helps to maintain a clean and safe environment for future use, preventing the spread of bacteria or chemicals that could potentially harm the user's eyes. Regular disinfection after each use is crucial in maintaining the effectiveness of the goggles and ensuring the safety of the wearer.

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  • 7. 
    A 98% solution of sulfuric acid has a concentration of - ProProfs

    A 98% solution of sulfuric acid has a concentration of

    • 19.8 M

    • 12.8 M

    • 9.8 M

    • 6.8 M

    Correct Answer
    A. 19.8 M
  • 8. 

    You have finished preparing a solution of sodium hydrogencarbonate and have about 5 grams of unused solid left in a beaker. Do you

    • Put the unused solid back ito its jar, as there is a limited school budget for chemicals.

    • React it with hydrochloric acid to neutralise it.

    • Wash it down the sink with a copious amount of water.

    Correct Answer
    A. Wash it down the sink with a copious amount of water.
    Explanation
    Putting it back in the jar may contaminate the rest of the sodium hydrogencarbonate.
    Reacting it with acid until neutralised is time consuming and wasteful of more chemicals to say the least.
    Washing it down the sink would be the preferred choice.

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Quiz Review Timeline (Updated): Jul 14, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Jul 14, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 15, 2018
    Quiz Created by
    Michealolaoire
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