OSH 3308 Assessment

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Question 1

The inhalation of radon has been shown to cause lung cancer in humans, so the World Health Organization (WHO) has set a recommended exposure guideline to what level of residential radon?

4.0 pCi/L

2.7 pCi/L

3.0 pCi/L

Less than 1.5 pCi/L

Question 2

The half-life of Cobalt is 5.27 years. How many atoms of Cobalt-60 will remain after 26.3 years if the source has 8 x 109

 today?

8 x109

4 x 109

1.6 x108

2.5 x 108

Question 3

Which organic compound with a vapor density of 2.7 produces acetic acid vapor when it interacts with water?

Hydrogen chloride

Acetic acid

Acetic anhydride

Acetyl chloride

Question 4

This organic compound, which has a workplace exposure limit of 1 ppm averaged over an 8-hour workday, is produced by the catalytic dehydrochlorination of 1,2-dichloroethane.

Polyurethane

PCB

Vinyl chloride

Acetylene

Question 5

A common reference that can help emergency responders in making initial decisions upon arriving at the scene of a hazardous materials release is which of the following?

Safety data sheets

NFPA hazard diamond

Emergency Response Guidebook

Hazardous Waste Manifest

Question 6

When magnesium burns in air, a mixture of magnesium oxide and magnesium nitride, as shown in the following reaction is produced. For each of the given reactions, identify the substances that are reduced.

          2Mg(s) + O2(g)

image0015f7b38c15f7b38c1yyo.gif

  2MgO(s)

          3Mg(s) + N2(g)

image0015f7b38c15f7b38c1yyo.gif

  Mg3N2(s)

Oxygen and magnesium

Magnesium and nitrogen

Magnesium oxide and nitride

Oxygen and nitrogen

Question 7

At a hazardous materials transportation mishap, what class of hazardous material is involved if the shipping paper listed the hazard class number 2.3?

Flammable gas

Radioactive material

Poisonous gas

Corrosive material

Question 8

When ammonium nitrate is found at a fire scene, it may undergo thermal decomposition producing which materials?

Nitrogen dioxide and carbon monoxide

Oxygen and steam

Nitrate and oxygen

Carbon monoxide and oxygen

Question 9

This common element that we studied in Unit II is used to produce water-reactive metallic hydrides.

Chlorine

Sulfur

Nitrogen

Hydrogen

Question 10

Normally, responding to an emergency incident involving explosives should be undertaken only by competent and experienced individuals who have received special training in the handling of explosives, except for which material? (Hint: This material can easily be desensitized by diluting it with water.)

Cyclonite

Tetryl

Black powder

TNT (trinitrotoluene)

Question 11

The strength of different oxidizers varies. Using the information in Chapter 11 of your textbook, arrange the oxidizers listed below according to their strengths (begin with the strongest oxidizing agent).

 Chlorine, Oxygen, Fluorine, Hydrogen Peroxide, concentrated Nitric Acid

Question 12

Emergency responders for radioactive material incidents normally use the inverse square law of radiation to estimate the separation distance from the radioactive source. If a source has an intensity of 3.125 R/min at one foot from the source, solve for the distance in feet to the 5 mR/min boundary. Show your solution, including assumptions.

Question 13

The current Occupational Safety and Health Administration (OSHA) ceiling limit for H2S is up to 20 ppm for general industry. If the H2S meter reads 35 mg/m3, is this level above or below the ceiling limit? Show your conversion of the meter read