UCI CHEM 1LD PRACTICAL QUESTIONS AND ANSWERS
UPDATED 2024/2025 A COMPLETE EXAM WITH
CORRECT VERIFIED ANSWERS BEST GRADED A+ FOR
SUCCESS
Why is the solution freezing point lower due to a weak acidity? - CORRECT ANSWERS particles
in the solution are greater due to dissociation
name common household products that contain flammable chemicals - CORRECT ANSWERS
rubbing alcohol, gasoline, antifreeze, nail polish remover
ways to stop a fire - CORRECT ANSWERS place beaker over an open flame, ground metal
container to prevent static electricity, remove ignition sources, limit quantities of flammable
substances in work area
what is true about flammability? - CORRECT ANSWERS 1. inflammable is another word for
flammable
2. a fire cannot start above or below a vapor's flammability limits
what number means that a chemical is extremely flammable? - CORRECT ANSWERS 4
The National Fire Protection Association (NFPA) diamond has a
_________ section for flammability - CORRECT ANSWERS red
If the number _____________
appears in this section, the chemical is a combustible, it will catch fire
when heated. - CORRECT ANSWERS 2
The Global Harmonized System (GHS) symbol is a picture of a ___________ - CORRECT
ANSWERS fire
, UCI CHEM 1LD PRACTICAL QUESTIONS AND ANSWERS
UPDATED 2024/2025 A COMPLETE EXAM WITH
CORRECT VERIFIED ANSWERS BEST GRADED A+ FOR
SUCCESS
If the hazard category is
_____________ , the chemical is extremely flammable - CORRECT ANSWERS HC 1
If the hazard category is __________ , the chemical is a
combustible. - CORRECT ANSWERS HC 4
best piece of glassware for TLC eluent ratios is __________ - CORRECT ANSWERS graduated
cylinder
What is true about fume hoods - CORRECT ANSWERS 1. room air should be drawn into the
fume hood
2. The window on the front of the fume hood is called a sash.
3. All work should be done at least 6 inches inside the hood.
4. A tissue paper held at the bottom of a sash should blow into the hood.
PEL - CORRECT ANSWERS permissible exposure limit
odor threshold - CORRECT ANSWERS gas concentration that 50% of the population can detect
odor fatigue - CORRECT ANSWERS decreased sensitivity to odors after prolonged exposure
IDLH - CORRECT ANSWERS Immediately Dangerous to Life and Health
UPDATED 2024/2025 A COMPLETE EXAM WITH
CORRECT VERIFIED ANSWERS BEST GRADED A+ FOR
SUCCESS
Why is the solution freezing point lower due to a weak acidity? - CORRECT ANSWERS particles
in the solution are greater due to dissociation
name common household products that contain flammable chemicals - CORRECT ANSWERS
rubbing alcohol, gasoline, antifreeze, nail polish remover
ways to stop a fire - CORRECT ANSWERS place beaker over an open flame, ground metal
container to prevent static electricity, remove ignition sources, limit quantities of flammable
substances in work area
what is true about flammability? - CORRECT ANSWERS 1. inflammable is another word for
flammable
2. a fire cannot start above or below a vapor's flammability limits
what number means that a chemical is extremely flammable? - CORRECT ANSWERS 4
The National Fire Protection Association (NFPA) diamond has a
_________ section for flammability - CORRECT ANSWERS red
If the number _____________
appears in this section, the chemical is a combustible, it will catch fire
when heated. - CORRECT ANSWERS 2
The Global Harmonized System (GHS) symbol is a picture of a ___________ - CORRECT
ANSWERS fire
, UCI CHEM 1LD PRACTICAL QUESTIONS AND ANSWERS
UPDATED 2024/2025 A COMPLETE EXAM WITH
CORRECT VERIFIED ANSWERS BEST GRADED A+ FOR
SUCCESS
If the hazard category is
_____________ , the chemical is extremely flammable - CORRECT ANSWERS HC 1
If the hazard category is __________ , the chemical is a
combustible. - CORRECT ANSWERS HC 4
best piece of glassware for TLC eluent ratios is __________ - CORRECT ANSWERS graduated
cylinder
What is true about fume hoods - CORRECT ANSWERS 1. room air should be drawn into the
fume hood
2. The window on the front of the fume hood is called a sash.
3. All work should be done at least 6 inches inside the hood.
4. A tissue paper held at the bottom of a sash should blow into the hood.
PEL - CORRECT ANSWERS permissible exposure limit
odor threshold - CORRECT ANSWERS gas concentration that 50% of the population can detect
odor fatigue - CORRECT ANSWERS decreased sensitivity to odors after prolonged exposure
IDLH - CORRECT ANSWERS Immediately Dangerous to Life and Health
