Exam (elaborations)
CIH COMBINED QUESTIONS AND ANSWERS RATED A+
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Exam of 108 pages for the course CIH at CIH (CIH COMBINED)
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CIH COMBINEDConvection heat - answer Heats air in surrounding area. Affected by air velocity.
Radiant heat - answer Does not heat air in the area. Not affected by air velocity. Best
controlled with shielding.
Half mask air purifying PF - answer10
Full face piece purifying PF - answer50
PAPR half mask PF - answer50
PAPR full face piece PF - answer1000
PAPR loose fitting PF - answer25
Supplied air Half mask continuous PF - answer50
Supplied air full face piece continuous PF - answer1000
SCBA demand PF - answer50
SCBA pressure demand PF - answer10,000
Arsenic - answerSkin & lung cancer, trivalent most toxic, Pale bands on fingernails,
fatigue, anemia, hearing, A1
Benzene - answerHematopoietic system, leukemia, A1, skin, metabolized by the body
to form phenol.
Beryllium - answerContact dermatitis, pneumonitis, granulmatous lesions, CBD, lung
cancer, A1, skin
Cadmium - answerKidney damage biggest concern. Tubular proteinuria, pulmonary
edema, respiratory irritation, delayed symptoms, A2
Chromium - answerDermatitis, upper respiratory tract irritation, ulcers, lung cancer, A1
Lead - answerNervous system, hematopoietic sytem, 90% stored in the bones, wrist
drop, spermatogenesis, hearing, A3
,Mercury elemental - answerPeripheral nervous system, kidney damage, tremors,
hearing, A4, skin
Mercury organic - answerNeuronal degeneration, kidney damage, skin
Methylene chloride - answer(Dichloromethane) skin, eye, and mucous membrane
irritation, depresses the CNS, COHb-emia, angina pectoris, A3
Organochlorines - answerInsecticide , interferes with normal CNS functions, aplastic
anemia, (ex. DDT, chlordane, Aldrin, Kepone)
Visible spectrum - answer400-760 nm
Microwave spectrum - answer300MHz to 300GHz
Radio frequency spectrum - answer300MHz to 30 KHz
UV spectrum - answer180-400 nm
IR spectrum - answer760 nm to 1000 micrometers(300GHz)
Class 1 laser - answerNo hazard under normal use
Class 2 laser - answerPower less than 1 mW, safe for t<0.25 sec visible
Class 2a laser - answerPower <0.39 microW, safe t <1000 sec. Supermarket scanner.
Class 3a laser - answerPower < 5mW, safe t<0.25 sec if irradiance <2.5 mW/cm^2
visible
Class 3b laser - answerPower <0.5 W, viewing controls recommend
Class 4 laser - answerPower > 0.5 W, controls required
Dust size - answer0.1 - 30 micrometers
Fume size - answer0.001-1.0 micrometers
Mist size - answer0.01-10 micrometers
Smoke size - answer0.01-1.0 micrometers
Thoracic dust cut point - answer10 micrometers
Respirable dust cut point - answer4 micrometers
,Inhalable dust cut point - answer100 micrometers
Probability not mutually exclusive - answerP(a or b)=P(a) + P(b) - (ab)
Joint probability - answerP(ab) = P(a) * P(b)
Probability of independent events - answerP(a and b) = P(a) * P(b)
Probability not mutually exclusive - answerP(a or b) = P(a) + P(b) - P(a and b)
Terminal settling velocity - answer= 0.003 * (diameter)^2
BED - answerBases are Electron Donors and proton acceptors
Cylinder volume - answerpie(r)^2(height)
Type 1 error - answerReject the null when true, alpha
Type 2 error - answerAccept the null when false, p value and beta
P value - answerProbability of obtaining a mean as extreme or more extreme than the
observed sample mean given that the null hypothesis is true.
Boyles law - answerP1V1 = P2V2
Charles law - answerV1/T1 = V2/T2
Minimum Volume sampling - answer= detection limit (micrograms)/PEL (mg/m^3)
Required sample time - answer= minimum sample volume/ sample rate
Accuracy - answer= (measured - true)*100/true
1 2 & 3 standard deviations - answer68.3%, 95.5% & 99.7%
Silica PEL - answer= 10/ (%quartz +2)
Isokinetic sampling, gas air stream greater than probe air stream. - answerOver sample
large particles
Isokinetic sampling, gas air stream less than probe air stream. - answerUnder sample
large particles
1 liter - answer33.8 ounces
Density of water - answer8.33 pounds per gallon
, Vinyl chloride - answerAngiosarcoma of liver, raynauds syndrome, acroosteolysis, lung
cancer, A1
Carbon disulfide - answerAntherosclerosis, peripheral neuropathy, psychosis, hearing,
A4, skin
Carbon tetrachloride - answerCirrhosis of liver, jaundice, tubular necrosis of the
proximal tubules, fatigue, nausea, A2, skin
Cobalt - answerHard metal disease (lung fibrosis), asthma, cardiomyopathy, A3
Ethylene oxide - answerPeripheral neuropathy, nausea, vomiting, toxic encephalopathy,
cancer, A2
Formaldehyde - answerRespiratory irritation, dermatitis, A2, sensitizer.
Ion or gas chromatography, infrared analyzer
Nickel compounds - answerLung cancer, adult respiratory distress syndrome (ARDS),
contact and sensitization dermatitis (nickel itch), airway irritation
Phosphorous compounds - answerAseptic necrosis of the bone, pulmonary edema,
CNS depression, skin burns, eye irritation, phossy jaw, liver damage
Vanadium - answerUpper airway irritation, heavy exposure green tongue
1,3-butadiene - answerFrostbite, dermatitis, upper airway irritation, blood and lymphatic
cancer, A2
White asbestos - answerChrysotile (serpentine) group. Most found in US.
Brown asbestos - answerAmosite (amphibole group)
Blue asbestos - answerCrocidolite (amphibole group) most toxic form
Phosgene - answerMucous membrane, skin, lung, & eye irritation, pulmonary edema
and emphysema
Hydrogen cyanide - answerUpper respiratory irritation, headache, nausea, thyroid,
cellular asphyxiation, skin
Antimony - answerSimilar effect as arsenic but vomiting more severe. Trivalent salts
most toxic - A2 lung cancer
Uranium - answerDeposited in bones but toxic effect on kidneys, A1
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