Chem 1LD Practical Questions With Complete Solutions
Which of the following would help you determine the severity
of a hazard?
= lethal dose 50 values
= PELs (permissible exposure limits)
= GHS symbols
= NFPA fire ratings
= chemical amount used
lethal dose 50 values,
PELs (permissible exposure limits),
GHS symbols,
NFPA fire ratings,
chemical amount used
(select all)
match the law to its description
(1) zero risk
(2) balancing
(3) technology-based
(1) no hazards are present
(2) risk allowed increase with benefits of chemical use
(3) exposure level is set to level it can be reduced to
Match the hazard class with the description of its effect at
its most dangerous hazard category (which is indicated with a
"1", e.g. Hazard Category 1, HC1)
,(1) eye hazards
(2) sensitizers
(3) mutagens
(4) carcinogens
(5) reproductive toxicants
(6) target organ toxicants
(7) aspiration hazards
(8) acute toxicants
(9) corrosives
(1) cause irreversible damage to the eye's cornea, iris, or
conjunctiva upon prolonged contact
(2) affect either the lungs the lungs or the skin, causing
"hypersensitivity" to the chemical
(3) produce genetic defects in humans or in animals
(4) cause cancer in humans
(5) cause damage to a developing fetus resulting in birth defects
and abnormalities
(6) attack certain organs causing them damage that affects their
ability to carry out normal functions
(7) can be fatal if swallowed and then enters the airways
(8) are fatal if exposed
(9) causes severe skin damage
, Which of the following characteristics would make a good
sunscreen?
= ambient reaction conditions (little to no heat or pressure
needed)
= color and feel
= high percent yield
= low hazard starting materials
= broad absorbance of ultraviolet light
= melting point value
ambient reaction conditions (little to no heat or pressure
needed),
color and feel,
high percent yield,
low hazard starting materials,
broad absorbance of ultraviolet light,
melting point value (select all)
filtration: ______
thin Layer chromatography: ______
crystallization: ______
I,
III,
II
Match the terms to the separation process:
(1) filtration:
(2) thin layer chromatography:
(3) crystallization:
Which of the following would help you determine the severity
of a hazard?
= lethal dose 50 values
= PELs (permissible exposure limits)
= GHS symbols
= NFPA fire ratings
= chemical amount used
lethal dose 50 values,
PELs (permissible exposure limits),
GHS symbols,
NFPA fire ratings,
chemical amount used
(select all)
match the law to its description
(1) zero risk
(2) balancing
(3) technology-based
(1) no hazards are present
(2) risk allowed increase with benefits of chemical use
(3) exposure level is set to level it can be reduced to
Match the hazard class with the description of its effect at
its most dangerous hazard category (which is indicated with a
"1", e.g. Hazard Category 1, HC1)
,(1) eye hazards
(2) sensitizers
(3) mutagens
(4) carcinogens
(5) reproductive toxicants
(6) target organ toxicants
(7) aspiration hazards
(8) acute toxicants
(9) corrosives
(1) cause irreversible damage to the eye's cornea, iris, or
conjunctiva upon prolonged contact
(2) affect either the lungs the lungs or the skin, causing
"hypersensitivity" to the chemical
(3) produce genetic defects in humans or in animals
(4) cause cancer in humans
(5) cause damage to a developing fetus resulting in birth defects
and abnormalities
(6) attack certain organs causing them damage that affects their
ability to carry out normal functions
(7) can be fatal if swallowed and then enters the airways
(8) are fatal if exposed
(9) causes severe skin damage
, Which of the following characteristics would make a good
sunscreen?
= ambient reaction conditions (little to no heat or pressure
needed)
= color and feel
= high percent yield
= low hazard starting materials
= broad absorbance of ultraviolet light
= melting point value
ambient reaction conditions (little to no heat or pressure
needed),
color and feel,
high percent yield,
low hazard starting materials,
broad absorbance of ultraviolet light,
melting point value (select all)
filtration: ______
thin Layer chromatography: ______
crystallization: ______
I,
III,
II
Match the terms to the separation process:
(1) filtration:
(2) thin layer chromatography:
(3) crystallization:
