#1
Which of the following is NOT a recommended attire for a laboratory?
Loose clothing
ExplanationLoose clothing poses a risk of catching fire or getting entangled in equipment.
#2
What should you do if you spill a chemical on your skin in the laboratory?
Wash the affected area with water for at least 15 minutes
ExplanationWater helps dilute and remove the chemical, minimizing skin damage.
#3
Which of the following is NOT a proper procedure for handling glassware in the laboratory?
Handle broken glass with your bare hands
ExplanationUsing bare hands risks cuts and exposure to hazardous substances.
#4
What is the correct procedure for smelling a chemical in the laboratory?
Waft the vapors towards your nose using your hand
ExplanationAvoids inhaling concentrated fumes directly, reducing the risk of respiratory irritation or harm.
#5
What should you do if a fire breaks out in the laboratory?
Use the nearest fire extinguisher to put out the fire
ExplanationPrompt action with proper equipment helps contain and extinguish fires swiftly.
#6
Which of the following is a proper way to carry out an experiment involving flames?
Keep flammable materials away from flames
ExplanationPrevents accidental fires and explosions by minimizing combustible materials near flames.
#7
What should be done before using a piece of equipment in the laboratory for the first time?
Read the equipment manual
ExplanationUnderstanding equipment operation and safety precautions reduces the risk of accidents.
#8
What should you do if you accidentally ingest a chemical in the laboratory?
Seek medical attention and bring the chemical container
ExplanationEnables medical professionals to provide appropriate treatment and identifies the ingested substance for proper care.
#9
What does the acronym PPE stand for in laboratory safety?
Personal Protection Equipment
ExplanationEssential gear like goggles, gloves, and lab coats to minimize exposure to hazards.
#10
What should you do if you accidentally spill a small amount of acid on the lab bench?
Clean it up immediately with water and paper towels
ExplanationPrompt cleanup prevents acid damage to surfaces and reduces the risk of further spills.
#11
What does MSDS stand for in laboratory safety?
Material Safety and Data Sheet
ExplanationProvides vital information on chemical hazards, handling, and emergency procedures.
#12
Which of the following is a proper way to dispose of chemical waste in the laboratory?
Dispose of it in designated waste containers according to instructions
ExplanationPrevents environmental contamination and ensures safe disposal following regulations.
#13
Which of the following is NOT a reason for wearing safety goggles in the laboratory?
To improve vision
ExplanationPrimarily worn to shield eyes from chemical splashes, debris, and other hazards.
#14
Which of the following is NOT a recommended practice for proper storage of chemicals in the laboratory?
Store chemicals alphabetically
ExplanationChemicals should be stored based on compatibility and hazard level, not alphabetically.
#15
Which of the following is NOT a recommended practice when using a Bunsen burner?
Use the burner to warm your hands
ExplanationPrevents burns and reduces the risk of accidental fires or explosions.