1.Which of the following is an oxidizer? a)AlCl 3 b)K 2 Cr 2 O 7 c)NaOH d)Cl 2 2
ID: 919272 • Letter: 1
Question
1.Which of the following is an oxidizer?
a)AlCl3
b)K2Cr2O7
c)NaOH
d)Cl2
2.In which case would exposure to a compound cause you more concern? (Choose one from each pair; ie. a or b, c or d, etc.)
a)an LD50 of 2500 mg/kg or b) an LD50 of 50 mg/kg
c) a TLV of 500 ppm or d) a TLV of 5 ppm
e) spilling 0.1 M HCl on my hand or f) spilling 0.1 M HF on my hand
g) 1000 ppm of a chemical asphyxiant or h) 1000 ppm of a simple asphyxiant
3.Which of the following labels would not be correct?
a)Methyl amine – corrosive
b)Carbon monoxide – oxidizer
c)Toluene – inhalation hazard
d)Methyl ethyl ketone – corrosive
e)Potassium oxide - corrosive
f)Potassium metal – Dangerous when wet
g)Picric acid, wetted with 25% water – Division 1.1D
4.Which of the following statements is correct?
a)The half-life of 14C in inorganic compounds like Na214CO3 is longer than the half-life of 14C in organic compounds like glucose.
b)131I is radioactive, but 127I is not.
c)Doubling the distance from a gamma radiation source halves the intensity of the exposure.
d)A given mass of 32P would give off more Ci of radiation than the same mass of 14C.
e)Alpha radiation is considered ionizing radiation but not beta radiation.
f)The rate of radiation given off by 235U in a nuclear reactor increases when it is undergoing fission and gets very hot, compared to the rate of decay when the fuel rod is not in the reactor and is at room temperature.
g)A DOT label of Radioactive Yellow-III is considered more dangerous than Radioactive White-I.
h)Most of the radiation that Americans are exposed to originates from nuclear power plants.
i)One Sievert of radiation is equivalent to one Curie.
j)A dose of 1 rem would kill most people exposed to it within a 30 day period.
k)Older people have a bigger response to radiation exposure than do children.
l) emitters require more shielding than radiation.
m)The half life of a radioactive isotope gets longer as the concentration of the isotope decreases.
n)14C is produced from 14N by alpha particle emission.
o)Contaminated foot coverings from a nuclear power plant would be labeled as Radioactive Yellow III during transport.
p)10 Ci is greater than 100 Bq.
q)10 RAD of radiation is approximately equal to 1 Sv.
Explanation / Answer
1) a
2)b, c, f, g
3) g
4)
a) correct
b) correct
c)correct
d)wrong
e)correct
f)coorect
g)correct
h)wrong
i)correct
j)correct
k)correct
l)wrong
m)correct
n)correct
o)wrong
p)correct
q)correct
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