Lab Safety exam latest update with complete solutions 2025-
2026
1. The air handling systems in
chemical laboratories circulates air The laboratory pressure should be less than
and balances the air pressure in that of the adjoining hallway ("negative
various spaces. What difference pressure").
should there be between the air
pressure in a laboratory and the air
pressure in an adjacent hallway?
2. Which statement is true about chemical A chemical asphyxiant interferes with the
body's
asphyxiants? chemical processing of oxygen.
3. A chemical compound may be identified The Chemical Abstract Service registry
number
in several ways. Which of the following (CAS number).
identifiers is unique (does not apply
to any other compound)?
4. What is the UC San Diego CHEM
Teach- ing Labs Rule about contact
Contact lenses are allowed with safety eye pro-
lens wear?
tection.
5. Which of these factors defines a
"poi- son" (or "highly toxic LD50 <= 50 mg/kg
material")?
6. Many factors influence how much harm Physical state (gas, liquid, solid)
may be done upon exposure to a
haz- ardous chemical. Which of
these factors DOES NOT play a
significant roll?
7. Carcinoge
n cance
Teratogen r
Lacrimato embry
r Cryogen
o
tears
temp
1/
6
, Lab Safety exam latest update with complete solutions 2025-
2026
8. A compound may metabolize to either more
toxic
or less toxic molecules.
2/
6
2026
1. The air handling systems in
chemical laboratories circulates air The laboratory pressure should be less than
and balances the air pressure in that of the adjoining hallway ("negative
various spaces. What difference pressure").
should there be between the air
pressure in a laboratory and the air
pressure in an adjacent hallway?
2. Which statement is true about chemical A chemical asphyxiant interferes with the
body's
asphyxiants? chemical processing of oxygen.
3. A chemical compound may be identified The Chemical Abstract Service registry
number
in several ways. Which of the following (CAS number).
identifiers is unique (does not apply
to any other compound)?
4. What is the UC San Diego CHEM
Teach- ing Labs Rule about contact
Contact lenses are allowed with safety eye pro-
lens wear?
tection.
5. Which of these factors defines a
"poi- son" (or "highly toxic LD50 <= 50 mg/kg
material")?
6. Many factors influence how much harm Physical state (gas, liquid, solid)
may be done upon exposure to a
haz- ardous chemical. Which of
these factors DOES NOT play a
significant roll?
7. Carcinoge
n cance
Teratogen r
Lacrimato embry
r Cryogen
o
tears
temp
1/
6
, Lab Safety exam latest update with complete solutions 2025-
2026
8. A compound may metabolize to either more
toxic
or less toxic molecules.
2/
6
