ENVIRONMENTAL HAZARDOUS MATERIALS

Question 1. Which of the following statements is FALSE regarding hydrogen peroxide?

Hydrogen peroxide is the primary constituent of OxiClean.

Hydrogen peroxide is corrosive.

Hydrogen peroxide can be used to destroy E.coli or salmonella.

Hydrogen peroxide employee exposure limit is 1 ppm.

Question 2. Which of the following oxidizers is the most hazardous?

Potassium permanganate

Potassium chlorate

Potassium peroxide

Potassium dichromate

Question 3. ABC Company was celebrating their working 1 million hours without a lost time incident by sponsoring a camping trip for their employees and their families. To light the campfire, one of the workers tried to use a match. When he rubbed the match head against the box, it did not ignite. Why?

The worker used a strike-anywhere match instead of a safety match.

The box did not contain red phosphorus and powdered glass.

The match did not contain antimony trisulfide, sulfur, and potassium chlorate.

The match contained tetraphosphorus trisulfide, sulfur, lead oxide, and powdered glass.

Question 4. You are the first on-the-scene responder at a hazmat incident in your community. Which of the following indicators would NOT indicate that the material involved is an oxidizer?

The number 6.1 as a component of a shipping description of a hazardous material listed on a shipping paper

The number 5.1 as a component of a shipping description of a hazardous material listed on a shipping paper

The word OXIDIZER printed on yellow labels affixed to packaging

The word OXIDIZER printed on yellow placards posted on each side and each end of a transport vehicle containing 454 kg or more of an oxidizer

Question 5. An oxidation number describes the combining capability of one ion to another ion or of one atom to another atom. Which of the following statements regarding oxidation numbers is FALSE?

H2S contains sulfur which has an oxidation number of -2.

Each oxygen in KMnO4 has an oxidation number of -2, and the oxidation number of K is +1; therefore, the oxidation number on Mn in this compound is +7.

The oxidation number of a monoatomic ion is the same as its ionic charge, such that Na ion has an oxidation number of +1.

The oxidation number of each atom in an element is zero, such that the oxidation number of Cl2 is -2.

Question 6. One or more of the ions that do not participate in an oxidation-reduction reaction are called __________ ions

Question 7. A dilute solution of __________ is effective in treating athletes foot because of its oxidizing capabilities.

Question 8. Following Hurricane Katrina in 2005, what oxidizer did cleanup crews use to eradicate the mold that grew in homes __________?

Question 9. The oxidation number of phosphorus in the P4O6 chemical formula is __________.

Question 10. A worker at DMG Energy, LLC experienced chest pain and was transported to the cardiac unit at a local hospital for treatment. During the doctor's evaluation, the worker disclosed that he was on an ultra-low sodium diet. Explain why nutritionists often advise individuals on low-sodium diets to avoid cured fish and meat products. Contrast some properties between metallic nitrites and metallic nitrates.

Question 11. Metallic peroxides and metallic hypochlorites, when used as bleaching agents, are distinguished by calling the latter chlorine bleach.

For hypochlorite bleaching agents, why do manufacturers sometimes identify their available chlorine on product labels? Explain what available chlorine means?

Discuss some hazards associated with metallic hypochlorites.

Discuss how water can effectively extinguish oxidizer supported fires.